diff --git a/src/Matrix.cpp b/src/Matrix.cpp
index 3eef744..8043598 100644
--- a/src/Matrix.cpp
+++ b/src/Matrix.cpp
@@ -671,6 +671,13 @@ namespace Aurora {
                 allDimIndex.push_back(j);
             }
         }
+        if (isScalar()){
+            mode = 0;
+        }
+        if (isVector()){
+            if (getDimSize(0)>1 && aRowIdx!=$) mode = 0;
+            if (getDimSize(1)>1 && aColIdx!=$) mode = 0;
+        }
         int rowStride = 1;
         int colStride =  getDimSize(0);
         int sliceStride =  getDimSize(0)*getDimSize(1);
@@ -1157,6 +1164,10 @@ namespace Aurora {
                     std::cerr <<"Assign value fail!Src slice(dim 2 size:"<< matrix.getDimSize(1) <<"), not match of des(dim 2 size:"<<mSize2<<")!";
                     return *this;
                 }
+                if (matrix.getDimSize(0)!=mSize) {
+                    std::cerr <<"Assign value fail!Src matrix(dim 1 size:"<< matrix.getDimSize(0)<<"), not match of des(dim 1 size:"<<mSize<<")!";
+                    return *this;
+                }
                 break;
             }
             case 1:{
@@ -1165,6 +1176,10 @@ namespace Aurora {
                     std::cerr <<"Assign value fail!Src matrix(dims count:"<< matrix.getDims() <<"), not match of des(dims count:"<<mSliceMode<<")!";
                     return *this;
                 }
+                if (matrix.getDimSize(0)!=mSize && matrix.getDimSize(1)!=mSize) {
+                    std::cerr <<"Assign value fail!Src matrix(dim 1 size:"<< matrix.getDimSize(0)<<"), not match of des(dim 1 size:"<<mSize<<")!";
+                    return *this;
+                }
                 break;
             }
             case 0:{
@@ -1174,10 +1189,7 @@ namespace Aurora {
                 }
             }
         }
-        if (matrix.getDimSize(0)!=mSize) {
-            std::cerr <<"Assign value fail!Src matrix(dim 1 size:"<< matrix.getDimSize(0)<<"), not match of des(dim 1 size:"<<mSize<<")!";
-            return *this;
-        }
+
         if (matrix.getValueType()!=mType) {
             std::cerr <<"Assign value fail!Src slice(value type:"<< matrix.getValueType() <<"), not match of des(value type:"<<mType<<")!";
             return *this;