diff --git a/TYPagerControllerDemo/TYPagerController/TabPager/TYTabPagerBarLayout.m b/TYPagerControllerDemo/TYPagerController/TabPager/TYTabPagerBarLayout.m
index d48b005..7c03242 100644
--- a/TYPagerControllerDemo/TYPagerController/TabPager/TYTabPagerBarLayout.m
+++ b/TYPagerControllerDemo/TYPagerController/TabPager/TYTabPagerBarLayout.m
@@ -204,12 +204,12 @@ - (void)transitionFromCell:(UICollectionViewCell<TYTabPagerBarCellProtocol> *)fr
         if (fromCell) {
             fromCell.titleLabel.font = _normalTextFont;
             fromCell.titleLabel.textColor = _normalTextColor;
-            fromCell.transform = CGAffineTransformMakeScale(_selectFontScale, _selectFontScale);
+            fromCell.transform = CGAffineTransformIdentity;
         }
         if (toCell) {
             toCell.titleLabel.font = _normalTextFont;
             toCell.titleLabel.textColor = _selectedTextColor ? _selectedTextColor : _normalTextColor;
-            toCell.transform = CGAffineTransformIdentity;
+            toCell.transform = CGAffineTransformMakeScale(1/_selectFontScale,1/ _selectFontScale);
         }
     };
     if (animate) {
@@ -226,9 +226,13 @@ - (void)transitionFromCell:(UICollectionViewCell<TYTabPagerBarCellProtocol> *)fr
     if (_pagerTabBar.countOfItems == 0 || !_textColorProgressEnable) {
         return;
     }
-    CGFloat currentTransform = (1.0 - _selectFontScale)*progress;
-    fromCell.transform = CGAffineTransformMakeScale(1.0-currentTransform, 1.0-currentTransform);
-    toCell.transform = CGAffineTransformMakeScale(_selectFontScale+currentTransform, _selectFontScale+currentTransform);
+    
+
+    // progress 0 --> 1 // from 1/_selectFontScale -> 1
+    CGFloat scale1 = (1 - 1 / _selectFontScale) * progress + 1 / _selectFontScale;
+    CGFloat scale2 = (1 / _selectFontScale - 1) * progress + 1;
+    fromCell.transform = CGAffineTransformMakeScale(scale1, scale1 );
+    toCell.transform = CGAffineTransformMakeScale(scale2, scale2) ;
     
     if (_normalTextColor == _selectedTextColor || !_selectedTextColor) {
         return;
diff --git a/TYPagerControllerDemo_swift.xcodeproj/project.xcworkspace/xcuserdata/sunset.xcuserdatad/UserInterfaceState.xcuserstate b/TYPagerControllerDemo_swift.xcodeproj/project.xcworkspace/xcuserdata/sunset.xcuserdatad/UserInterfaceState.xcuserstate
new file mode 100644
index 0000000..9e2bcdf
Binary files /dev/null and b/TYPagerControllerDemo_swift.xcodeproj/project.xcworkspace/xcuserdata/sunset.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/TYPagerControllerDemo_swift.xcodeproj/xcuserdata/sunset.xcuserdatad/xcschemes/xcschememanagement.plist b/TYPagerControllerDemo_swift.xcodeproj/xcuserdata/sunset.xcuserdatad/xcschemes/xcschememanagement.plist
new file mode 100644
index 0000000..7653099
--- /dev/null
+++ b/TYPagerControllerDemo_swift.xcodeproj/xcuserdata/sunset.xcuserdatad/xcschemes/xcschememanagement.plist
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>SchemeUserState</key>
+	<dict>
+		<key>TYPagerControllerDemo_swift.xcscheme</key>
+		<dict>
+			<key>orderHint</key>
+			<integer>0</integer>
+		</dict>
+	</dict>
+</dict>
+</plist>