diff --git a/SmartL_E802/README.md b/SmartL_E802/README.md
index 87ea38807a6af895c69ae0f4a6ca6a06ba8ee8ac..0725675de876536ea815d5dc7ed957ec844edf9c 100644
--- a/SmartL_E802/README.md
+++ b/SmartL_E802/README.md
@@ -92,7 +92,7 @@ QEMU can simulate the kernel to run on different boards, freeing the dependence
 
 Hint : You can use the `repo` command to get the source code.
 
-## 4.Source buildding
+## 4.Source building
 
    1. Execute the hb set command and select the project`qemu_csky_mini_system_demo`.
 
@@ -103,7 +103,7 @@ Hint : You can use the `repo` command to get the source code.
       hb clean && hb build
       ```
 
-   3. After the buildding is complete,the corresponding executable file is in the home directory:
+   3. After the building is complete,the corresponding executable file is in the home directory:
 
       ```
       out/SmartL_E802/qemu_csky_mini_system_demo/
diff --git a/esp32/README.md b/esp32/README.md
index 415f9b5c53811edb502b2cad75c6feb3731aaa6e..9549d5590600be3b7e98424b0d54a5fa3047b800 100644
--- a/esp32/README.md
+++ b/esp32/README.md
@@ -107,7 +107,7 @@ QEMU can simulate the kernel to run on different boards ,eliminate dependence on
 
 Hint : You can use the `repo` command to get the source code.
 
-## 4.Source buildding
+## 4.Source building
 
    1. Execute the hb set command and select the project `qemu_xtensa_mini_system_demo`.
 
@@ -118,7 +118,7 @@ Hint : You can use the `repo` command to get the source code.
       hb clean && hb build
       ```
 
-   3. After the buildding is complete, the corresponding executable file is in the home directory：
+   3. After the building is complete, the corresponding executable file is in the home directory：
 
       ```
       out/esp32/qemu_xtensa_mini_system_demo/