diff --git a/MatchMaker.js b/MatchMaker.js
index d77f3bf..2256a42 100644
--- a/MatchMaker.js
+++ b/MatchMaker.js
@@ -5,8 +5,8 @@ exports.createMatchmaker = createMatchmaker;
 exports.displayPairings = displayPairings;
 class Matchmaker {
     constructor(players) {
-        this.roundHistory = []; // 记录每轮的配对历史
         this.currentRound = 0;
+        this.restingHistory = new Map(); // 记录每个玩家的轮空次数
         this.mPlayers = players;
     }
     /**
@@ -14,7 +14,7 @@ class Matchmaker {
      * @returns 配对结果数组
      */
     generatePairings() {
-        const playerIds = Array.from(this.mPlayers.keys());
+        const playerIds = Array.from(this.mPlayers.keys()); // 只使用当前存活的玩家
         const playerCount = playerIds.length;
         if (playerCount === 0) {
             return [];
@@ -24,21 +24,19 @@ class Matchmaker {
             return [{
                     playerId: playerIds[0],
                     opponentId: playerIds[0],
-                    // socketID: this.mPlayers.get(playerIds[0])!.mSocketId,
                     isResting: true
                 }];
         }
-        const pairings = this.createOptimalPairings(playerIds);
-        this.roundHistory.push(pairings.map(p => `${p.playerId}-${p.opponentId}`));
+        const pairings = this.createRandomPairings(playerIds);
         this.currentRound++;
         return pairings;
     }
     /**
-     * 创建最优配对
+     * 创建随机配对 - 使用 Fisher-Yates 洗牌算法
      * @param playerIds 玩家ID数组
      * @returns 配对结果
      */
-    createOptimalPairings(playerIds) {
+    createRandomPairings(playerIds) {
         const playerCount = playerIds.length;
         const isOddCount = playerCount % 2 === 1;
         // 如果是奇数，需要找一个玩家轮空
@@ -48,31 +46,24 @@ class Matchmaker {
             restingPlayer = this.selectRestingPlayer(playerIds);
             activePlayers = playerIds.filter(id => id !== restingPlayer);
         }
-        // 对剩余玩家进行配对
+        // Fisher-Yates 洗牌算法 - O(n) 时间复杂度
+        const shuffled = this.shuffleArray(activePlayers);
         const pairings = [];
-        const usedPlayers = new Set();
-        // 使用轮转算法确保配对的多样性
-        const rotatedPlayers = this.rotatePlayerOrder(activePlayers);
-        for (let i = 0; i < rotatedPlayers.length; i += 2) {
-            if (i + 1 < rotatedPlayers.length) {
-                const player1 = rotatedPlayers[i];
-                const player2 = rotatedPlayers[i + 1];
-                if (!usedPlayers.has(player1) && !usedPlayers.has(player2)) {
-                    pairings.push({
-                        playerId: player1,
-                        opponentId: player2,
-                        // socketID: this.mPlayers.get(player1)!.mSocketId,
-                        isResting: false
-                    });
-                    pairings.push({
-                        playerId: player2,
-                        opponentId: player1,
-                        // socketID: this.mPlayers.get(player2)!.mSocketId,
-                        isResting: false
-                    });
-                    usedPlayers.add(player1);
-                    usedPlayers.add(player2);
-                }
+        // 按顺序两两配对 - O(n) 时间复杂度
+        for (let i = 0; i < shuffled.length; i += 2) {
+            if (i + 1 < shuffled.length) {
+                const player1 = shuffled[i];
+                const player2 = shuffled[i + 1];
+                pairings.push({
+                    playerId: player1,
+                    opponentId: player2,
+                    isResting: false
+                });
+                pairings.push({
+                    playerId: player2,
+                    opponentId: player1,
+                    isResting: false
+                });
             }
         }
         // 处理轮空玩家
@@ -81,107 +72,76 @@ class Matchmaker {
             pairings.push({
                 playerId: restingPlayer,
                 opponentId: ghostOpponent,
-                // socketID: this.mPlayers.get(restingPlayer)!.mSocketId,
                 isResting: true
             });
         }
         return pairings;
     }
+    /**
+     * Fisher-Yates 洗牌算法 - 完全随机且高效
+     * @param array 要洗牌的数组
+     * @returns 洗牌后的新数组
+     */
+    shuffleArray(array) {
+        const result = [...array];
+        for (let i = result.length - 1; i > 0; i--) {
+            const j = Math.floor(Math.random() * (i + 1));
+            [result[i], result[j]] = [result[j], result[i]];
+        }
+        return result;
+    }
     /**
      * 选择轮空玩家（轮换制，确保每个玩家都有机会轮空）
-     * @param playerIds 玩家ID数组
+     * @param playerIds 玩家ID数组（当前存活的玩家）
      * @returns 轮空玩家ID
      */
     selectRestingPlayer(playerIds) {
-        const restingCounts = new Map();
-        // 统计每个玩家的轮空次数
-        playerIds.forEach(id => restingCounts.set(id, 0));
-        this.roundHistory.forEach(round => {
-            round.forEach(pairing => {
-                const [playerId, opponentId] = pairing.split('-');
-                if (playerId === opponentId) {
-                    const count = restingCounts.get(playerId) || 0;
-                    restingCounts.set(playerId, count + 1);
-                }
-            });
+        // 初始化轮空次数记录
+        playerIds.forEach(id => {
+            if (!this.restingHistory.has(id)) {
+                this.restingHistory.set(id, 0);
+            }
         });
-        // 找到轮空次数最少的所有玩家
+        // 找到轮空次数最少的玩家
         let minRestingCount = Infinity;
         playerIds.forEach(id => {
-            const count = restingCounts.get(id) || 0;
+            const count = this.restingHistory.get(id) || 0;
             if (count < minRestingCount) {
                 minRestingCount = count;
             }
         });
         const candidatePlayers = playerIds.filter(id => {
-            const count = restingCounts.get(id) || 0;
+            const count = this.restingHistory.get(id) || 0;
             return count === minRestingCount;
         });
-        // 在轮空次数最少的玩家中轮换选择
-        // 使用轮次数来确定选择哪个玩家，确保轮换
-        const selectedIndex = this.currentRound % candidatePlayers.length;
-        return candidatePlayers[selectedIndex];
+        // 在轮空次数最少的玩家中随机选择
+        const selectedIndex = Math.floor(Math.random() * candidatePlayers.length);
+        const selectedPlayer = candidatePlayers[selectedIndex];
+        // 增加该玩家的轮空次数
+        this.restingHistory.set(selectedPlayer, (this.restingHistory.get(selectedPlayer) || 0) + 1);
+        return selectedPlayer;
     }
     /**
-     * 为轮空玩家选择一个"幽灵对手"（用于显示和计算）
+     * 为轮空玩家选择一个"幽灵对手"（用于显示）
      * @param restingPlayer 轮空玩家ID
-     * @param allPlayers 所有玩家ID
+     * @param allPlayers 所有当前存活的玩家ID
      * @returns 幽灵对手ID
      */
     selectGhostOpponent(restingPlayer, allPlayers) {
-        // 选择与轮空玩家对战次数最少的玩家作为幽灵对手
-        const opponentCounts = new Map();
-        allPlayers.forEach(id => {
-            if (id !== restingPlayer) {
-                opponentCounts.set(id, 0);
-            }
-        });
-        this.roundHistory.forEach(round => {
-            round.forEach(pairing => {
-                const [playerId, opponentId] = pairing.split('-');
-                if (playerId === restingPlayer && opponentId !== restingPlayer) {
-                    const count = opponentCounts.get(opponentId) || 0;
-                    opponentCounts.set(opponentId, count + 1);
-                }
-            });
-        });
-        let minCount = Infinity;
-        let ghostOpponent = allPlayers.find(id => id !== restingPlayer) || restingPlayer;
-        opponentCounts.forEach((count, playerId) => {
-            if (count < minCount) {
-                minCount = count;
-                ghostOpponent = playerId;
-            }
-        });
-        return ghostOpponent;
-    }
-    /**
-     * 根据轮次旋转玩家顺序，增加配对的随机性
-     * @param playerIds 玩家ID数组
-     * @returns 旋转后的玩家数组
-     */
-    rotatePlayerOrder(playerIds) {
-        if (playerIds.length <= 2) {
-            return [...playerIds];
+        // 只在当前存活的玩家中选择幽灵对手
+        const alivePlayers = allPlayers.filter(id => id !== restingPlayer);
+        if (alivePlayers.length === 0) {
+            return restingPlayer; // 如果没有其他存活玩家，返回自己
         }
-        const rotateAmount = this.currentRound % playerIds.length;
-        return [
-            ...playerIds.slice(rotateAmount),
-            ...playerIds.slice(0, rotateAmount)
-        ];
-    }
-    /**
-     * 获取配对历史
-     * @returns 历史配对记录
-     */
-    getPairingHistory() {
-        return [...this.roundHistory];
+        // 随机选择一个幽灵对手
+        const randomIndex = Math.floor(Math.random() * alivePlayers.length);
+        return alivePlayers[randomIndex];
     }
     /**
      * 重置配对历史（新游戏开始时调用）
      */
     resetHistory() {
-        this.roundHistory = [];
+        this.restingHistory.clear();
         this.currentRound = 0;
     }
     /**
@@ -190,11 +150,20 @@ class Matchmaker {
      */
     updatePlayers(newPlayers) {
         this.mPlayers = newPlayers;
+        // 清理已死亡玩家的轮空历史记录
+        const alivePlayerIds = new Set(newPlayers.keys());
+        for (const playerId of this.restingHistory.keys()) {
+            if (!alivePlayerIds.has(playerId)) {
+                this.restingHistory.delete(playerId);
+            }
+        }
     }
     deletePlayer(playerId) {
         if (this.mPlayers.has(playerId)) {
             this.mPlayers.delete(playerId);
         }
+        // 清理该玩家的轮空历史
+        this.restingHistory.delete(playerId);
     }
 }
 exports.Matchmaker = Matchmaker;
@@ -209,11 +178,7 @@ function displayPairings(pairings) {
     pairings.forEach(pairing => {
         const pairKey = [pairing.playerId, pairing.opponentId].sort().join('-');
         if (!processedPairs.has(pairKey)) {
-            // if (pairing.isResting) {
-            //   console.log(`${pairing.playerId} 轮空 (对手: ${pairing.opponentId})`);
-            // } else {
             console.log(`${pairing.playerId} VS ${pairing.opponentId}`);
-            // }
             processedPairs.add(pairKey);
         }
     });
diff --git a/MatchMaker.ts b/MatchMaker.ts
index 5733f44..93d65d6 100644
--- a/MatchMaker.ts
+++ b/MatchMaker.ts
@@ -3,14 +3,13 @@ import { Player } from "./Player";
 interface PairingResult {
     playerId: string;
     opponentId: string;
-    // socketID: string;
     isResting: boolean; // 是否为轮空玩家
   }
   
   class Matchmaker {
     private mPlayers: Map<string, Player>;
-    private roundHistory: string[][] = []; // 记录每轮的配对历史
     private currentRound: number = 0;
+    private restingHistory: Map<string, number> = new Map(); // 记录每个玩家的轮空次数
   
     constructor(players: Map<string, Player>) {
       this.mPlayers = players;
@@ -21,7 +20,7 @@ interface PairingResult {
      * @returns 配对结果数组
      */
     public generatePairings(): PairingResult[] {
-      const playerIds = Array.from(this.mPlayers.keys());
+      const playerIds = Array.from(this.mPlayers.keys()); // 只使用当前存活的玩家
       const playerCount = playerIds.length;
       
       if (playerCount === 0) {
@@ -33,24 +32,22 @@ interface PairingResult {
         return [{
           playerId: playerIds[0],
           opponentId: playerIds[0],
-          // socketID: this.mPlayers.get(playerIds[0])!.mSocketId,
           isResting: true
         }];
       }
   
-      const pairings = this.createOptimalPairings(playerIds);
-      this.roundHistory.push(pairings.map(p => `${p.playerId}-${p.opponentId}`));
+      const pairings = this.createRandomPairings(playerIds);
       this.currentRound++;
       
       return pairings;
     }
   
     /**
-     * 创建最优配对
+     * 创建随机配对 - 使用 Fisher-Yates 洗牌算法
      * @param playerIds 玩家ID数组
      * @returns 配对结果
      */
-    private createOptimalPairings(playerIds: string[]): PairingResult[] {
+    private createRandomPairings(playerIds: string[]): PairingResult[] {
       const playerCount = playerIds.length;
       const isOddCount = playerCount % 2 === 1;
       
@@ -63,35 +60,27 @@ interface PairingResult {
         activePlayers = playerIds.filter(id => id !== restingPlayer);
       }
   
-      // 对剩余玩家进行配对
-      const pairings: PairingResult[] = [];
-      const usedPlayers = new Set<string>();
-  
-      // 使用轮转算法确保配对的多样性
-      const rotatedPlayers = this.rotatePlayerOrder(activePlayers);
+      // Fisher-Yates 洗牌算法 - O(n) 时间复杂度
+      const shuffled = this.shuffleArray(activePlayers);
       
-      for (let i = 0; i < rotatedPlayers.length; i += 2) {
-        if (i + 1 < rotatedPlayers.length) {
-          const player1 = rotatedPlayers[i];
-          const player2 = rotatedPlayers[i + 1];
+      const pairings: PairingResult[] = [];
+      
+      // 按顺序两两配对 - O(n) 时间复杂度
+      for (let i = 0; i < shuffled.length; i += 2) {
+        if (i + 1 < shuffled.length) {
+          const player1 = shuffled[i];
+          const player2 = shuffled[i + 1];
           
-          if (!usedPlayers.has(player1) && !usedPlayers.has(player2)) {
-            pairings.push({
-              playerId: player1,
-              opponentId: player2,
-              // socketID: this.mPlayers.get(player1)!.mSocketId,
-              isResting: false
-            });
-            pairings.push({
-              playerId: player2,
-              opponentId: player1,
-              // socketID: this.mPlayers.get(player2)!.mSocketId,
-              isResting: false
-            });
-            
-            usedPlayers.add(player1);
-            usedPlayers.add(player2);
-          }
+          pairings.push({
+            playerId: player1,
+            opponentId: player2,
+            isResting: false
+          });
+          pairings.push({
+            playerId: player2,
+            opponentId: player1,
+            isResting: false
+          });
         }
       }
   
@@ -101,124 +90,88 @@ interface PairingResult {
         pairings.push({
           playerId: restingPlayer,
           opponentId: ghostOpponent,
-          // socketID: this.mPlayers.get(restingPlayer)!.mSocketId,
           isResting: true
         });
       }
   
       return pairings;
     }
+    
+    /**
+     * Fisher-Yates 洗牌算法 - 完全随机且高效
+     * @param array 要洗牌的数组
+     * @returns 洗牌后的新数组
+     */
+    private shuffleArray<T>(array: T[]): T[] {
+      const result = [...array];
+      for (let i = result.length - 1; i > 0; i--) {
+        const j = Math.floor(Math.random() * (i + 1));
+        [result[i], result[j]] = [result[j], result[i]];
+      }
+      return result;
+    }
   
     /**
      * 选择轮空玩家（轮换制，确保每个玩家都有机会轮空）
-     * @param playerIds 玩家ID数组
+     * @param playerIds 玩家ID数组（当前存活的玩家）
      * @returns 轮空玩家ID
      */
     private selectRestingPlayer(playerIds: string[]): string {
-      const restingCounts = new Map<string, number>();
-      
-      // 统计每个玩家的轮空次数
-      playerIds.forEach(id => restingCounts.set(id, 0));
-      
-      this.roundHistory.forEach(round => {
-        round.forEach(pairing => {
-          const [playerId, opponentId] = pairing.split('-');
-          if (playerId === opponentId) {
-            const count = restingCounts.get(playerId) || 0;
-            restingCounts.set(playerId, count + 1);
-          }
-        });
+      // 初始化轮空次数记录
+      playerIds.forEach(id => {
+        if (!this.restingHistory.has(id)) {
+          this.restingHistory.set(id, 0);
+        }
       });
-  
-      // 找到轮空次数最少的所有玩家
+      
+      // 找到轮空次数最少的玩家
       let minRestingCount = Infinity;
       playerIds.forEach(id => {
-        const count = restingCounts.get(id) || 0;
+        const count = this.restingHistory.get(id) || 0;
         if (count < minRestingCount) {
           minRestingCount = count;
         }
       });
   
       const candidatePlayers = playerIds.filter(id => {
-        const count = restingCounts.get(id) || 0;
+        const count = this.restingHistory.get(id) || 0;
         return count === minRestingCount;
       });
   
-      // 在轮空次数最少的玩家中轮换选择
-      // 使用轮次数来确定选择哪个玩家，确保轮换
-      const selectedIndex = this.currentRound % candidatePlayers.length;
-      return candidatePlayers[selectedIndex];
+      // 在轮空次数最少的玩家中随机选择
+      const selectedIndex = Math.floor(Math.random() * candidatePlayers.length);
+      const selectedPlayer = candidatePlayers[selectedIndex];
+      
+      // 增加该玩家的轮空次数
+      this.restingHistory.set(selectedPlayer, (this.restingHistory.get(selectedPlayer) || 0) + 1);
+      
+      return selectedPlayer;
     }
   
     /**
-     * 为轮空玩家选择一个"幽灵对手"（用于显示和计算）
+     * 为轮空玩家选择一个"幽灵对手"（用于显示）
      * @param restingPlayer 轮空玩家ID
-     * @param allPlayers 所有玩家ID
+     * @param allPlayers 所有当前存活的玩家ID
      * @returns 幽灵对手ID
      */
     private selectGhostOpponent(restingPlayer: string, allPlayers: string[]): string {
-      // 选择与轮空玩家对战次数最少的玩家作为幽灵对手
-      const opponentCounts = new Map<string, number>();
+      // 只在当前存活的玩家中选择幽灵对手
+      const alivePlayers = allPlayers.filter(id => id !== restingPlayer);
       
-      allPlayers.forEach(id => {
-        if (id !== restingPlayer) {
-          opponentCounts.set(id, 0);
-        }
-      });
-  
-      this.roundHistory.forEach(round => {
-        round.forEach(pairing => {
-          const [playerId, opponentId] = pairing.split('-');
-          if (playerId === restingPlayer && opponentId !== restingPlayer) {
-            const count = opponentCounts.get(opponentId) || 0;
-            opponentCounts.set(opponentId, count + 1);
-          }
-        });
-      });
-  
-      let minCount = Infinity;
-      let ghostOpponent = allPlayers.find(id => id !== restingPlayer) || restingPlayer;
-      
-      opponentCounts.forEach((count, playerId) => {
-        if (count < minCount) {
-          minCount = count;
-          ghostOpponent = playerId;
-        }
-      });
-  
-      return ghostOpponent;
-    }
-  
-    /**
-     * 根据轮次旋转玩家顺序，增加配对的随机性
-     * @param playerIds 玩家ID数组
-     * @returns 旋转后的玩家数组
-     */
-    private rotatePlayerOrder(playerIds: string[]): string[] {
-      if (playerIds.length <= 2) {
-        return [...playerIds];
+      if (alivePlayers.length === 0) {
+        return restingPlayer; // 如果没有其他存活玩家，返回自己
       }
-  
-      const rotateAmount = this.currentRound % playerIds.length;
-      return [
-        ...playerIds.slice(rotateAmount),
-        ...playerIds.slice(0, rotateAmount)
-      ];
-    }
-  
-    /**
-     * 获取配对历史
-     * @returns 历史配对记录
-     */
-    public getPairingHistory(): string[][] {
-      return [...this.roundHistory];
+      
+      // 随机选择一个幽灵对手
+      const randomIndex = Math.floor(Math.random() * alivePlayers.length);
+      return alivePlayers[randomIndex];
     }
   
     /**
      * 重置配对历史（新游戏开始时调用）
      */
     public resetHistory(): void {
-      this.roundHistory = [];
+      this.restingHistory.clear();
       this.currentRound = 0;
     }
   
@@ -228,14 +181,22 @@ interface PairingResult {
      */
     public updatePlayers(newPlayers: Map<string, Player>): void {
       this.mPlayers = newPlayers;
+      
+      // 清理已死亡玩家的轮空历史记录
+      const alivePlayerIds = new Set(newPlayers.keys());
+      for (const playerId of this.restingHistory.keys()) {
+        if (!alivePlayerIds.has(playerId)) {
+          this.restingHistory.delete(playerId);
+        }
+      }
     }
 
-    public deletePlayer(playerId:string)
-    {
-      if(this.mPlayers.has(playerId))
-      {
+    public deletePlayer(playerId: string) {
+      if (this.mPlayers.has(playerId)) {
         this.mPlayers.delete(playerId);
       }
+      // 清理该玩家的轮空历史
+      this.restingHistory.delete(playerId);
     }
   }
   
@@ -254,11 +215,7 @@ interface PairingResult {
       const pairKey = [pairing.playerId, pairing.opponentId].sort().join('-');
       
       if (!processedPairs.has(pairKey)) {
-        // if (pairing.isResting) {
-        //   console.log(`${pairing.playerId} 轮空 (对手: ${pairing.opponentId})`);
-        // } else {
-           console.log(`${pairing.playerId} VS ${pairing.opponentId}`);
-        // }
+        console.log(`${pairing.playerId} VS ${pairing.opponentId}`);
         processedPairs.add(pairKey);
       }
     });