diff --git a/NEWS.md b/NEWS.md
index af12df1b..7d39c54a 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -7,6 +7,7 @@ Red Panda C++ Version 1.0.4
   - enhancement: if a project's unit encoding is the same with project's encoding, don't save its encoding
   - fix: files will be saved to default encoding inspite of its original encoding
   - fix: parenthesis skip doesn't work when editing non-c/c++ files
+  - enhancement: prefer local headers over system headers when complete #include header path
 
 Red Panda C++ Version 1.0.3
   - fix: when oj problem grabbed by competitive companion received,
diff --git a/RedPandaIDE/editor.cpp b/RedPandaIDE/editor.cpp
index f2a7b3e6..8a0776ce 100644
--- a/RedPandaIDE/editor.cpp
+++ b/RedPandaIDE/editor.cpp
@@ -3120,7 +3120,7 @@ void Editor::completionInsert(bool appendFunc)
 
 void Editor::headerCompletionInsert()
 {
-    QString headerName = mHeaderCompletionPopup->selectedFilename();
+    QString headerName = mHeaderCompletionPopup->selectedFilename(true);
     if (headerName.isEmpty())
         return;
 
diff --git a/RedPandaIDE/mainwindow.cpp b/RedPandaIDE/mainwindow.cpp
index ca258fe4..7b647e40 100644
--- a/RedPandaIDE/mainwindow.cpp
+++ b/RedPandaIDE/mainwindow.cpp
@@ -570,9 +570,13 @@ void MainWindow::updateEditorColorSchemes()
     QColor baseColor = palette().color(QPalette::Base);
     item = pColorManager->getItem(schemeName, SYNS_AttrPreprocessor);
     if (item) {
-        mHeaderCompletionPopup->setSuggestionColor(item->foreground());
+        mHeaderCompletionPopup->setSuggestionColor(item->foreground(),
+                                                   item->foreground(),
+                                                   item->foreground());
     } else  {
-        mHeaderCompletionPopup->setSuggestionColor(palette().color(QPalette::Text));
+        mHeaderCompletionPopup->setSuggestionColor(palette().color(QPalette::Text),
+                                                   palette().color(QPalette::Text),
+                                                   palette().color(QPalette::Text));
     }
     item = pColorManager->getItem(schemeName, COLOR_SCHEME_ERROR);
     if (item && haveGoodContrast(item->foreground(), baseColor)) {
diff --git a/RedPandaIDE/settings.cpp b/RedPandaIDE/settings.cpp
index 55216b12..4468ec0f 100644
--- a/RedPandaIDE/settings.cpp
+++ b/RedPandaIDE/settings.cpp
@@ -2763,7 +2763,7 @@ void Settings::CompilerSets::deleteSet(int index)
     saveSets();
 }
 
-int Settings::CompilerSets::size() const
+size_t Settings::CompilerSets::size() const
 {
     return mList.size();
 }
diff --git a/RedPandaIDE/settings.h b/RedPandaIDE/settings.h
index 350c2d6f..d8b02412 100644
--- a/RedPandaIDE/settings.h
+++ b/RedPandaIDE/settings.h
@@ -1334,7 +1334,7 @@ public:
         void saveDefaultIndex();
         void deleteSet(int index);
         void saveSet(int index);
-        int size() const;
+        size_t size() const;
         int defaultIndex() const;
         void setDefaultIndex(int value);
         PCompilerSet defaultSet();
diff --git a/RedPandaIDE/widgets/headercompletionpopup.cpp b/RedPandaIDE/widgets/headercompletionpopup.cpp
index 8706ad70..e4ecb6dd 100644
--- a/RedPandaIDE/widgets/headercompletionpopup.cpp
+++ b/RedPandaIDE/widgets/headercompletionpopup.cpp
@@ -17,9 +17,9 @@
 #include "headercompletionpopup.h"
 
 #include <QCoreApplication>
-#include <QDir>
 #include <QFileInfo>
 #include <QVBoxLayout>
+#include <QDebug>
 
 HeaderCompletionPopup::HeaderCompletionPopup(QWidget* parent):QWidget(parent)
 {
@@ -86,7 +86,7 @@ bool HeaderCompletionPopup::search(const QString &phrase, bool autoHideOnSingleR
             if (autoHideOnSingleResult)
                 return true;
             // if only one suggestion, and is exactly the symbol to search, hide the frame (the search is over)
-            if (symbol == mCompletionList.front())
+            if (symbol == mCompletionList[0]->filename)
                 return true;
         }
     } else {
@@ -100,43 +100,66 @@ void HeaderCompletionPopup::setKeypressedCallback(const KeyPressedCallback &newK
     mListView->setKeypressedCallback(newKeypressedCallback);
 }
 
-void HeaderCompletionPopup::setSuggestionColor(const QColor &color)
+void HeaderCompletionPopup::setSuggestionColor(const QColor& localColor,
+                                               const QColor& projectColor,
+                                               const QColor& systemColor)
 {
-    mModel->setColor(color);
+    mModel->setLocalColor(localColor);
+    mModel->setProjectColor(projectColor);
+    mModel->setSystemColor(systemColor);
 }
 
-QString HeaderCompletionPopup::selectedFilename()
+QString HeaderCompletionPopup::selectedFilename(bool updateUsageCount)
 {
     if (!isEnabled())
         return "";
     int index = mListView->currentIndex().row();
+    PHeaderCompletionListItem item;
     if (index>=0 && index<mCompletionList.count())
-        return mCompletionList[index];
+        item=mCompletionList[index];
     else if (mCompletionList.count()>0) {
-        return mCompletionList.front();
+        item=mCompletionList.front();
     }
-        return "";
+    if (item) {
+        if (updateUsageCount) {
+            item->usageCount++;
+            mHeaderUsageCounts.insert(item->fullpath,item->usageCount);
+        }
+        return item->filename;
+    }
+    return "";
 }
 
+static bool sortByUsage(const PHeaderCompletionListItem& item1,const PHeaderCompletionListItem& item2){
+    if (item1->usageCount != item2->usageCount)
+        return item1->usageCount > item2->usageCount;
+
+    if (item1->itemType != item2->itemType)
+        return item1->itemType<item2->itemType;
+
+    return item1->filename < item2->filename;
+}
+
+
 void HeaderCompletionPopup::filterList(const QString &member)
 {
+    Qt::CaseSensitivity caseSensitivity=mIgnoreCase?Qt::CaseInsensitive:Qt::CaseSensitive;
     mCompletionList.clear();
     if (member.isEmpty()) {
-        foreach (const QString& s,mFullCompletionList) {
-            mCompletionList.append(s);
+        foreach (const PHeaderCompletionListItem& item,mFullCompletionList.values()) {
+            mCompletionList.append(item);
         }
     } else {
-        foreach (const QString& s,mFullCompletionList) {
-            if (mIgnoreCase && s.startsWith(member, Qt::CaseInsensitive)) {
-                mCompletionList.append(s);
-            } else if (s.startsWith(member, Qt::CaseSensitive)){
-                mCompletionList.append(s);
+        foreach (const PHeaderCompletionListItem& item,mFullCompletionList.values()) {
+            if (item->filename.startsWith(member, caseSensitivity)) {
+                mCompletionList.append(item);
             }
         }
     }
-    std::sort(mCompletionList.begin(),mCompletionList.end());
+    std::sort(mCompletionList.begin(),mCompletionList.end(), sortByUsage);
 }
 
+
 void HeaderCompletionPopup::getCompletionFor(const QString &phrase)
 {
     int idx = phrase.lastIndexOf('\\');
@@ -147,33 +170,33 @@ void HeaderCompletionPopup::getCompletionFor(const QString &phrase)
     if (idx < 0) { // dont have basedir
         if (mSearchLocal) {
             QFileInfo fileInfo(mCurrentFile);
-            addFilesInPath(fileInfo.absolutePath());
+            addFilesInPath(fileInfo.absolutePath(), HeaderCompletionListItemType::LocalHeader);
         };
 
         for (const QString& path: mParser->includePaths()) {
-            addFilesInPath(path);
+            addFilesInPath(path, HeaderCompletionListItemType::ProjectHeader);
         }
 
         for (const QString& path: mParser->projectIncludePaths()) {
-            addFilesInPath(path);
+            addFilesInPath(path, HeaderCompletionListItemType::SystemHeader);
         }
     } else {
         QString current = phrase.mid(0,idx);
         if (mSearchLocal) {
             QFileInfo fileInfo(mCurrentFile);
-            addFilesInSubDir(fileInfo.absolutePath(),current);
+            addFilesInSubDir(fileInfo.absolutePath(),current, HeaderCompletionListItemType::LocalHeader);
         }
         for (const QString& path: mParser->includePaths()) {
-            addFilesInSubDir(path,current);
+            addFilesInSubDir(path,current, HeaderCompletionListItemType::ProjectHeader);
         }
 
         for (const QString& path: mParser->projectIncludePaths()) {
-            addFilesInSubDir(path,current);
+            addFilesInSubDir(path,current, HeaderCompletionListItemType::SystemHeader);
         }
     }
 }
 
-void HeaderCompletionPopup::addFilesInPath(const QString &path)
+void HeaderCompletionPopup::addFilesInPath(const QString &path, HeaderCompletionListItemType type)
 {
     QDir dir(path);
     if (!dir.exists())
@@ -183,25 +206,30 @@ void HeaderCompletionPopup::addFilesInPath(const QString &path)
             continue;
         QString suffix = fileInfo.suffix().toLower();
         if (suffix == "h" || suffix == "hpp" || suffix == "") {
-            addFile(fileInfo.fileName());
+            addFile(dir, fileInfo.fileName(), type);
         }
     }
 }
 
-void HeaderCompletionPopup::addFile(const QString &fileName)
+void HeaderCompletionPopup::addFile(const QDir& dir, const QString &fileName, HeaderCompletionListItemType type)
 {
     if (fileName.isEmpty())
         return;
     if (fileName.startsWith('.'))
         return;
-    mFullCompletionList.insert(fileName);
+    PHeaderCompletionListItem item = std::make_shared<HeaderCompletionListItem>();
+    item->filename = fileName;
+    item->itemType = type;
+    item->fullpath = dir.absoluteFilePath(fileName);
+    item->usageCount = mHeaderUsageCounts.value(item->fullpath,0);
+    mFullCompletionList.insert(fileName,item);
 }
 
-void HeaderCompletionPopup::addFilesInSubDir(const QString &baseDirPath, const QString &subDirName)
+void HeaderCompletionPopup::addFilesInSubDir(const QString &baseDirPath, const QString &subDirName, HeaderCompletionListItemType type)
 {
     QDir baseDir(baseDirPath);
     QString subDirPath = baseDir.filePath(subDirName);
-    addFilesInPath(subDirPath);
+    addFilesInPath(subDirPath, type);
 }
 
 bool HeaderCompletionPopup::searchLocal() const
@@ -259,7 +287,7 @@ bool HeaderCompletionPopup::event(QEvent *event)
     return result;
 }
 
-HeaderCompletionListModel::HeaderCompletionListModel(const QStringList *files, QObject *parent):
+HeaderCompletionListModel::HeaderCompletionListModel(const QList<PHeaderCompletionListItem> *files, QObject *parent):
     QAbstractListModel(parent),
     mFiles(files)
 {
@@ -280,10 +308,18 @@ QVariant HeaderCompletionListModel::data(const QModelIndex &index, int role) con
 
     switch(role) {
     case Qt::DisplayRole: {
-        return mFiles->at(index.row());
+        return mFiles->at(index.row())->filename;
         }
     case Qt::ForegroundRole:
-        return mColor;
+        switch(mFiles->at(index.row())->itemType) {
+        case HeaderCompletionListItemType::LocalHeader:
+            return mLocalColor;
+        case HeaderCompletionListItemType::ProjectHeader:
+            return mProjectColor;
+        case HeaderCompletionListItemType::SystemHeader:
+            return mSystemColor;
+        }
+
         break;
     }
     return QVariant();
@@ -295,7 +331,17 @@ void HeaderCompletionListModel::notifyUpdated()
     endResetModel();
 }
 
-void HeaderCompletionListModel::setColor(const QColor &newColor)
+void HeaderCompletionListModel::setSystemColor(const QColor &newColor)
 {
-    mColor = newColor;
+    mSystemColor = newColor;
+}
+
+void HeaderCompletionListModel::setProjectColor(const QColor &newColor)
+{
+    mProjectColor = newColor;
+}
+
+void HeaderCompletionListModel::setLocalColor(const QColor &newColor)
+{
+    mLocalColor = newColor;
 }
diff --git a/RedPandaIDE/widgets/headercompletionpopup.h b/RedPandaIDE/widgets/headercompletionpopup.h
index c0e6756d..1fe2ab89 100644
--- a/RedPandaIDE/widgets/headercompletionpopup.h
+++ b/RedPandaIDE/widgets/headercompletionpopup.h
@@ -17,22 +17,42 @@
 #ifndef HEADERCOMPLETIONPOPUP_H
 #define HEADERCOMPLETIONPOPUP_H
 
+#include <QDir>
 #include <QWidget>
 #include "codecompletionlistview.h"
 #include "../parser/cppparser.h"
 
+enum class HeaderCompletionListItemType {
+    LocalHeader,
+    ProjectHeader,
+    SystemHeader
+};
+
+struct HeaderCompletionListItem {
+    QString filename;
+    QString fullpath;
+    int usageCount;
+    HeaderCompletionListItemType itemType;
+};
+
+using PHeaderCompletionListItem=std::shared_ptr<HeaderCompletionListItem>;
+
 class HeaderCompletionListModel: public QAbstractListModel {
     Q_OBJECT
 public:
-    explicit HeaderCompletionListModel(const QStringList* files,QObject *parent = nullptr);
+    explicit HeaderCompletionListModel(const QList<PHeaderCompletionListItem>* files,QObject *parent = nullptr);
     int rowCount(const QModelIndex &parent) const override;
     QVariant data(const QModelIndex &index, int role) const override;
     void notifyUpdated();
-    void setColor(const QColor &newColor);
+    void setLocalColor(const QColor &newColor);
+    void setSystemColor(const QColor &newColor);
+    void setProjectColor(const QColor &newColor);
 
 private:
-    const QStringList* mFiles;
-    QColor mColor;
+    const QList<PHeaderCompletionListItem>* mFiles;
+    QColor mLocalColor;
+    QColor mSystemColor;
+    QColor mProjectColor;
 };
 
 class HeaderCompletionPopup : public QWidget
@@ -44,21 +64,24 @@ public:
     void prepareSearch(const QString& phrase, const QString& fileName);
     bool search(const QString& phrase, bool autoHideOnSingleResult);
     void setKeypressedCallback(const KeyPressedCallback &newKeypressedCallback);
-    void setSuggestionColor(const QColor& color);
-    QString selectedFilename();
+    void setSuggestionColor(const QColor& localColor,
+                            const QColor& projectColor,
+                            const QColor& systemColor);
+    QString selectedFilename(bool updateUsageCount);
 
 private:
     void filterList(const QString& member);
     void getCompletionFor(const QString& phrase);
-    void addFilesInPath(const QString& path);
-    void addFile(const QString& fileName);
-    void addFilesInSubDir(const QString& baseDirPath, const QString& subDirName);
+    void addFilesInPath(const QString& path, HeaderCompletionListItemType type);
+    void addFile(const QDir& dir,  const QString& fileName, HeaderCompletionListItemType type);
+    void addFilesInSubDir(const QString& baseDirPath, const QString& subDirName, HeaderCompletionListItemType type);
 private:
 
     CodeCompletionListView* mListView;
     HeaderCompletionListModel* mModel;
-    QSet<QString> mFullCompletionList;
-    QStringList mCompletionList;
+    QHash<QString, PHeaderCompletionListItem> mFullCompletionList;
+    QList<PHeaderCompletionListItem> mCompletionList;
+    QHash<QString,int> mHeaderUsageCounts;
     int mShowCount;
     QSet<QString> mAddedFileNames;