diff --git a/src/dialogs/EditPatientDialog.cpp b/src/dialogs/EditPatientDialog.cpp
index e08fbd7..1b2596a 100644
--- a/src/dialogs/EditPatientDialog.cpp
+++ b/src/dialogs/EditPatientDialog.cpp
@@ -48,6 +48,7 @@ EditPatientDialog::EditPatientDialog(QWidget* parent, Qt::WindowFlags f) : GUIFo
     QLabel* lbl_id = new QLabel(this);
     lbl_id->setText(tr("ID ") + QString("<font color='#930000'>*</font>"));
     le_id = new ULineEdit(this);
+    le_id->setMaxLength(30);
     le_id->setValidator(new QRegExpValidator(QRegExp("[a-zA-z0-9]+$"), le_id));
     layout->addWidget(lbl_id);
     layout->addWidget(le_id);
@@ -59,6 +60,7 @@ EditPatientDialog::EditPatientDialog(QWidget* parent, Qt::WindowFlags f) : GUIFo
     QLabel* lbl_AccessionNumber = new QLabel(this);
     lbl_AccessionNumber->setText(tr("Accession Number"));
     mAccessionNumber = new ULineEdit(this);
+    mAccessionNumber->setMaxLength(30);
     mAccessionNumber->setValidator(new QRegExpValidator(QRegExp("[a-zA-z0-9]+$"), mAccessionNumber));
 
     layout->addWidget(lbl_AccessionNumber);
@@ -72,6 +74,7 @@ EditPatientDialog::EditPatientDialog(QWidget* parent, Qt::WindowFlags f) : GUIFo
     lbl_name->setText(tr("Name") + QString("<font color='#930000'>*</font>"));
     le_name = new ULineEdit(this);
     le_name->setValidator(new QRegExpValidator(QRegExp("^[A-Za-z0-9\u4e00-\u9fa5]+$"), le_name));
+    le_name->setMaxLength(30);
     layout->addWidget(lbl_name);
     layout->addWidget(le_name);
     QLabel* lbl_endline2 = new QLabel(this);