diff --git a/NEWS.md b/NEWS.md
index 35151a6f..c62d08da 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -11,6 +11,12 @@ Red Panda C++ Version 2.18
   - enhancement: Options in compiler set settings, to generate syntax error for large stack objects. （Enable for Debug settings by default)
   - enhancement: Options in compiler set settings, to generate protection code for stack smashing attack. （Enable for Debug settings by default)
   - enhancement: Options in compiler set settings, to enable address sanitizer. Not available in windows.（Enable for Debug settings by default)
+  - fix: The comboxbox to input search keyword in the search dialog is case insensitive.
+  - fix: The comboxbox to input replace text in the search dialog is case insensitive.
+  - fix: The comboxbox to input search keyword in the search in files dialog is case insensitive.
+  - fix: The comboxbox to input address expression in the debug panel's memory view is case insensitive.
+  - fix: The comboxbox to input evaluation expression in the debug panel is case insensitive.
+  - fix: The comboxbox to input replace text in the search panel is case insensitive.
 
 Red Panda C++ Version 2.17
 
diff --git a/RedPandaIDE/mainwindow.cpp b/RedPandaIDE/mainwindow.cpp
index 0d985370..198da6ed 100644
--- a/RedPandaIDE/mainwindow.cpp
+++ b/RedPandaIDE/mainwindow.cpp
@@ -77,6 +77,7 @@
 #include <QMimeDatabase>
 #include <QMimeType>
 #include <QToolTip>
+#include <QCompleter>
 
 #include "mainwindow.h"
 #include <QScrollBar>
@@ -260,6 +261,11 @@ MainWindow::MainWindow(QWidget *parent)
 //    updateEditorActions();
 //    updateCaretActions();
 
+    ui->cbReplaceInHistory->completer()->setCaseSensitivity(Qt::CaseSensitive);
+    ui->cbEvaluate->completer()->setCaseSensitivity(Qt::CaseSensitive);
+    ui->cbMemoryAddress->completer()->setCaseSensitivity(Qt::CaseSensitive);
+    ui->cbFilesPath->completer()->setCaseSensitivity(Qt::CaseInsensitive);
+
     connect(ui->debugConsole,&QConsole::commandInput,this,&MainWindow::onDebugCommandInput);
     connect(ui->cbEvaluate->lineEdit(), &QLineEdit::returnPressed,
             this, &MainWindow::onDebugEvaluateInput);
diff --git a/RedPandaIDE/mainwindow.ui b/RedPandaIDE/mainwindow.ui
index 7901310b..3da4f4e7 100644
--- a/RedPandaIDE/mainwindow.ui
+++ b/RedPandaIDE/mainwindow.ui
@@ -487,7 +487,7 @@
      <enum>QTabWidget::West</enum>
     </property>
     <property name="currentIndex">
-     <number>1</number>
+     <number>0</number>
     </property>
     <property name="usesScrollButtons">
      <bool>true</bool>
@@ -971,7 +971,6 @@
        <widget class="IssuesTable" name="tableIssues">
         <property name="font">
          <font>
-          <weight>50</weight>
           <bold>false</bold>
          </font>
         </property>
@@ -1133,7 +1132,7 @@
           <enum>QTabWidget::North</enum>
          </property>
          <property name="currentIndex">
-          <number>1</number>
+          <number>2</number>
          </property>
          <widget class="QWidget" name="tabDebugConsole">
           <attribute name="title">
diff --git a/RedPandaIDE/widgets/searchdialog.cpp b/RedPandaIDE/widgets/searchdialog.cpp
index 45d5dee6..061d3ab3 100644
--- a/RedPandaIDE/widgets/searchdialog.cpp
+++ b/RedPandaIDE/widgets/searchdialog.cpp
@@ -1,6 +1,7 @@
 #include "searchdialog.h"
 #include "ui_searchdialog.h"
 
+#include <QCompleter>
 #include <QMessageBox>
 #include <memory>
 #include <qsynedit/searcher/basicsearcher.h>
@@ -29,6 +30,8 @@ SearchDialog::SearchDialog(QWidget *parent) :
     onTabBarCurrentChanged(mSearchTabIdx);
     mBasicSearchEngine = std::make_shared<QSynedit::BasicSearcher>();
     mRegexSearchEngine = std::make_shared<QSynedit::RegexSearcher>();
+    ui->cbFind->completer()->setCaseSensitivity(Qt::CaseSensitive);
+    ui->cbReplace->completer()->setCaseSensitivity(Qt::CaseSensitive);
 }
 
 SearchDialog::~SearchDialog()
diff --git a/RedPandaIDE/widgets/searchinfiledialog.cpp b/RedPandaIDE/widgets/searchinfiledialog.cpp
index 276edd05..61615a2d 100644
--- a/RedPandaIDE/widgets/searchinfiledialog.cpp
+++ b/RedPandaIDE/widgets/searchinfiledialog.cpp
@@ -27,6 +27,7 @@
 #include <QMessageBox>
 #include <QDebug>
 #include <QProgressDialog>
+#include <QCompleter>
 
 
 SearchInFileDialog::SearchInFileDialog(QWidget *parent) :
@@ -38,6 +39,8 @@ SearchInFileDialog::SearchInFileDialog(QWidget *parent) :
     mSearchOptions&=0;
     mBasicSearchEngine= QSynedit::PSynSearchBase(new QSynedit::BasicSearcher());
     mRegexSearchEngine= QSynedit::PSynSearchBase(new QSynedit::RegexSearcher());
+    ui->cbFind->completer()->setCaseSensitivity(Qt::CaseSensitive);
+
 }
 
 SearchInFileDialog::~SearchInFileDialog()