diff --git a/NEWS.md b/NEWS.md
index 2e3b6de7..eddccfbe 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -16,6 +16,7 @@ Version 0.7.8
  - enhancement: can set editor's default background / foreground color. They must be setted to make the custom color schemes correctly.
  - enhancement: can set the color for the current line's number in the gutter
  - all predefined color schemes updated. 
+ - enhancement: check syntax/parse symbols when modifed and cursor's line changed.
 
 Version 0.7.7
  - enhancement: Problem Set 
diff --git a/RedPandaIDE/colorschemes/VS_Code.scheme b/RedPandaIDE/colorschemes/VS_Code.scheme
index d7298b79..2cc3e83e 100644
--- a/RedPandaIDE/colorschemes/VS_Code.scheme
+++ b/RedPandaIDE/colorschemes/VS_Code.scheme
@@ -159,7 +159,7 @@
 	"Breakpoint" : {
 	},
 	"Error" : {
-                "foreground" : "#ff2f32"
+                "foreground" : "#ff5053"
 	},
 	"Active Breakpoint" : {
 		"foreground" : "#FFFFCE",
diff --git a/RedPandaIDE/editor.cpp b/RedPandaIDE/editor.cpp
index 20be2e7f..bf2104db 100644
--- a/RedPandaIDE/editor.cpp
+++ b/RedPandaIDE/editor.cpp
@@ -78,6 +78,7 @@ Editor::Editor(QWidget *parent, const QString& filename,
   mCurrentHighlightedWord(),
   mSaving(false)
 {
+    mCurrentLineModified = false;
     mUseCppSyntax = pSettings->editor().defaultFileCpp();
     if (mFilename.isEmpty()) {
         mFilename = tr("untitled")+QString("%1").arg(getNewFileNumber());
@@ -1355,25 +1356,29 @@ Editor::PSyntaxIssue Editor::getSyntaxIssueAtPosition(const BufferCoord &pos)
     return PSyntaxIssue();
 }
 
-void Editor::onModificationChanged(bool) {
-    updateCaption();
-}
-
 void Editor::onStatusChanged(SynStatusChanges changes)
 {
-    if (!changes.testFlag(SynStatusChange::scReadOnly)
+    if ((!changes.testFlag(SynStatusChange::scReadOnly)
             && !changes.testFlag(SynStatusChange::scInsertMode)
             && (lines()->count()!=mLineCount)
-            && (lines()->count()!=0) && ((mLineCount>0) || (lines()->count()>1))) {
+            && (lines()->count()!=0) && ((mLineCount>0) || (lines()->count()>1)))
+            ||
+        (mCurrentLineModified
+            && !changes.testFlag(SynStatusChange::scReadOnly)
+            && changes.testFlag(SynStatusChange::scCaretY))) {
+        mCurrentLineModified = false;
         reparse();
         if (pSettings->editor().syntaxCheckWhenLineChanged())
             checkSyntaxInBack();
         reparseTodo();
     }
     mLineCount = lines()->count();
-    if (changes.testFlag(scModified)) {
+    if (changes.testFlag(scModifyChanged)) {
         updateCaption();
     }
+    if (changes.testFlag(scModified)) {
+        mCurrentLineModified = true;
+    }
 
     if (changes.testFlag(SynStatusChange::scCaretX)
             || changes.testFlag(SynStatusChange::scCaretY)) {
diff --git a/RedPandaIDE/editor.h b/RedPandaIDE/editor.h
index 14de640c..311a8543 100644
--- a/RedPandaIDE/editor.h
+++ b/RedPandaIDE/editor.h
@@ -173,7 +173,6 @@ public:
     void tab() override;
 
 private slots:
-    void onModificationChanged(bool status) ;
     void onStatusChanged(SynStatusChanges changes);
     void onGutterClicked(Qt::MouseButton button, int x, int y, int line);
     void onTipEvalValueReady(const QString& value);
@@ -263,7 +262,7 @@ private:
     QString mCurrentHighlightedWord;
 
     bool mSaving;
-
+    bool mCurrentLineModified;
     int mXOffsetSince;
     int mTabStopBegin;
     int mTabStopEnd;
diff --git a/RedPandaIDE/qsynedit/SynEdit.cpp b/RedPandaIDE/qsynedit/SynEdit.cpp
index 536e42e6..2e695288 100644
--- a/RedPandaIDE/qsynedit/SynEdit.cpp
+++ b/RedPandaIDE/qsynedit/SynEdit.cpp
@@ -5977,14 +5977,16 @@ bool SynEdit::modified() const
 
 void SynEdit::setModified(bool Value)
 {
-    if (Value)
+    if (Value) {
         mLastModifyTime = QDateTime::currentDateTime();
+        emit statusChanged(SynStatusChange::scModified);
+    }
     if (Value != mModified) {
         mModified = Value;
         if (mOptions.testFlag(SynEditorOption::eoGroupUndo) && (!Value) && mUndoList->CanUndo())
             mUndoList->AddGroupBreak();
         mUndoList->setInitialState(!Value);
-        emit statusChanged(SynStatusChange::scModified);
+        emit statusChanged(SynStatusChange::scModifyChanged);
     }
 }
 
diff --git a/RedPandaIDE/qsynedit/SynEdit.h b/RedPandaIDE/qsynedit/SynEdit.h
index c7f42fef..783a3fc5 100644
--- a/RedPandaIDE/qsynedit/SynEdit.h
+++ b/RedPandaIDE/qsynedit/SynEdit.h
@@ -40,10 +40,11 @@ enum SynStatusChange {
     scLeftChar = 0x0008,
     scTopLine = 0x0010,
     scInsertMode = 0x0020,
-    scModified = 0x0040,
+    scModifyChanged = 0x0040,
     scSelection = 0x0080,
     scReadOnly = 0x0100,
-    scOpenFile = 0x0200
+    scOpenFile = 0x0200,
+    scModified = 0x0400
 };
 
 Q_DECLARE_FLAGS(SynStatusChanges, SynStatusChange)
diff --git a/RedPandaIDE/utils.cpp b/RedPandaIDE/utils.cpp
index b472845c..265a38a3 100644
--- a/RedPandaIDE/utils.cpp
+++ b/RedPandaIDE/utils.cpp
@@ -857,5 +857,5 @@ QByteArray getHTTPBody(const QByteArray& content) {
 bool haveGoodContrast(const QColor& c1, const QColor &c2) {
     int lightness1 = qGray(c1.rgb());
     int lightness2 = qGray(c2.rgb());
-    return std::abs(lightness1 - lightness2)>=100;
+    return std::abs(lightness1 - lightness2)>=120;
 }