diff --git a/NEWS.md b/NEWS.md
index 34ffd3a9..9bbcec88 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -24,7 +24,8 @@ Red Panda C++ Version 2.0
   - enhancement: when closing project, prevent all editors that belongs to the project check syntax and parse todos.
   - enhancement: add "auto reformat when saving codes" in "Options" / "Editor" / "Misc" (off by default)
   - enhancement: use "todo" and "fixme" as the keyword for TODO comments
-  - fix: rules for obj missed in makefile generated for project 
+  - fix: rules for obj missing in the makefile generated for project 
+  - enhancement: before run a project'executable, check if there's project file  newer than the executable
 
 Red Panda C++ Version 1.5
 
diff --git a/RedPandaIDE/compiler/projectcompiler.cpp b/RedPandaIDE/compiler/projectcompiler.cpp
index 396f8224..6d1bf960 100644
--- a/RedPandaIDE/compiler/projectcompiler.cpp
+++ b/RedPandaIDE/compiler/projectcompiler.cpp
@@ -323,7 +323,7 @@ void ProjectCompiler::writeMakeObjFilesRules(QFile &file)
     if (mProject->options().usePrecompiledHeader)
         precompileStr = " $(PCH) ";
 
-    QList<PProjectUnit> projectUnits;
+    QList<PProjectUnit> projectUnits=mProject->unitList();
     foreach(const PProjectUnit &unit, projectUnits) {
         FileType fileType = getFileType(unit->fileName());
         // Only process source files
diff --git a/RedPandaIDE/mainwindow.cpp b/RedPandaIDE/mainwindow.cpp
index c7207b4b..420fa14a 100644
--- a/RedPandaIDE/mainwindow.cpp
+++ b/RedPandaIDE/mainwindow.cpp
@@ -1880,7 +1880,9 @@ void MainWindow::runExecutable(RunType runType)
     CompileTarget target =getCompileTarget();
     if (target == CompileTarget::Project) {
         QStringList binDirs = mProject->binDirs();
-        if (mProject->modified()  &&
+        QFileInfo execInfo(mProject->executable());
+        QDateTime execModTime = execInfo.lastModified();
+        if (execInfo.exists() && mProject->unitsModifiedSince(execModTime)  &&
                 QMessageBox::question(
                     this,
                     tr("Rebuild Project"),
diff --git a/RedPandaIDE/project.cpp b/RedPandaIDE/project.cpp
index 140cc8fd..1cb1f5d5 100644
--- a/RedPandaIDE/project.cpp
+++ b/RedPandaIDE/project.cpp
@@ -156,6 +156,18 @@ QString Project::makeFileName()
         return QDir(directory()).filePath(MAKEFILE_NAME);
 }
 
+bool Project::unitsModifiedSince(const QDateTime& time)
+{
+    foreach(const PProjectUnit& unit, mUnits) {
+        QFileInfo info(unit->fileName());
+        if (info.lastModified()>time) {
+            qDebug()<<info.lastModified()<<time;
+            return true;
+        }
+    }
+    return false;
+}
+
 bool Project::modified() const
 {
     return mModified;
diff --git a/RedPandaIDE/project.h b/RedPandaIDE/project.h
index 1bfe7f30..86b52a40 100644
--- a/RedPandaIDE/project.h
+++ b/RedPandaIDE/project.h
@@ -210,6 +210,7 @@ public:
     QString directory() const;
     QString executable() const;
     QString makeFileName();
+    bool unitsModifiedSince(const QDateTime& time);
     bool modified() const;
     void setFileName(QString value);
     void setModified(bool value);