diff --git a/README.md b/README.md
index 478e6da..9b86df2 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,59 @@
   * At present, the algorithm of station position calculation is integrated in the plot, and only two default tropospheric and ionospheric correction algorithms are supported at present, and the accuracy is still being optimized.
   * Until October 14, 2024, with KNZ_Plot, pseudo-range single point positioning of the GPS & Galileo satellite system can be performed.[ADIN 2024/10/14]
   * The format of the (.po file) is described in detail in the help documentation.
+## Project Update
+
+#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
+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
+1.Update KNZ_Plot.
+2.Update mpre GUI parts.
+
+#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
+1. Realize the full gui program.
+2. Complete the plot function.
+
+#Update: 2024/09/28
+1. Implement GUI by WIN32 API.
+2. Optimize code structure.
+
+#Update: 2024/09/26
+1. Fix some bug.
+2. Optimize code structure.
+
+#Update: 2024/09/23
+1. Modify some crash.
+2. Fix some bug.
+
+#Update: 2024/09/22
+1. Modify UI.
+2. Fix some bug.
+
+#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.
+4. Adding and modify many useful function in their header file:
+-blh2enu.h
+-xyz2blh.h
+-rahcal.h
+-deg2dms.h
+-degRrad.h
+
+#Update: 2024/09/20
+1. Correct some mistake.
+2. Optimize code structure.
+
 
 ## Project notice
 * When writing the code, with the help of the existing open source code results, and different degrees of reference, here one by one mark and express thanks: