diff --git a/README.md b/README.md
index 48296e11d2f..4b98cfa3760 100644
--- a/README.md
+++ b/README.md
@@ -94,6 +94,10 @@ RT-Thread supports many architectures, and has covered the major architectures i
 
 The main IDE/compilers supported by RT-Thread are:
 
+- RT-Thread Studio IDE
+- MDK KEIL
+- IAR
+- GCC
 - RT-Thread Studio IDE
 - MDK KEIL
 - IAR