diff --git a/README.md b/README.md
index 3f9e121..0185a8c 100644
--- a/README.md
+++ b/README.md
@@ -36,50 +36,50 @@ Features ：
   
 ## Project Update
 
-### Big Update: 2024/10/26
+#### Big Update: 2024/10/26
 1. Full gui
 2. Integrated KNZ_Calculate and KNZ_Plot.
 3. Rename the project as GeoTrackLab after the integrate.
 4. Realized GPS, BeiDou, Galileo, GLONASS satellite position calculation.
 5. New module added: 3D satellite orbit display.
 
-### Update: 2024/10/14
+#### Update: 2024/10/14
 1. KNZ_Calculate: be able to calculate the sat pos of GPS & BDS & Galileo.
 2. KNZ_Plot: be able to Single postiting by GPS & Galileo.
 
-### Update: 2024/10/09
+#### Update: 2024/10/09
 1. KNZ_Calculate: modified some mistake and optimize the use experience.
 2. KNZ_Plot: more selective options and more united style of GUI.
 
-### Rename the Project: 2024/10/08
+#### Rename the Project: 2024/10/08
 1. Update KNZ_Plot.
 2. Update more GUI parts.
 
-### Update: 2024/10/06
+#### Update: 2024/10/06
 1. SPP_Plot: Realize the file view function.
 2. SPP_Plot: Realize the color select Optimized operation experience.
 
-### Big Update: 2024/10/05
+#### Big Update: 2024/10/05
 1. Realize the full gui program.
 2. Complete the plot function.
 
-### Update: 2024/09/28
+#### Update: 2024/09/28
 1. Implement GUI by WIN32 API.
 2. Optimize code structure.
 
-### Update: 2024/09/26
+#### Update: 2024/09/26
 1. Fix some bug.
 2. Optimize code structure.
 
-### Update: 2024/09/23
+#### Update: 2024/09/23
 1. Modify some crash.
 2. Fix some bug.
 
-### Update: 2024/09/22
+#### Update: 2024/09/22
 1. Modify UI.
 2. Fix some bug.
 
-### Big Update: 2024/09/21
+#### Big Update: 2024/09/21
 1. Correct some mistake.
 2. Optimize code structure.
 3. Improve the function and operation logic of software input and output.
@@ -90,7 +90,7 @@ Features ：
 -deg2dms.h
 -degRrad.h
 
-### Update: 2024/09/20
+#### Update: 2024/09/20
 1. Correct some mistake.
 2. Optimize code structure.