diff --git a/String.h b/SString.h
similarity index 100%
rename from String.h
rename to SString.h
diff --git a/String.cpp b/String.cpp
index 3b97d722..c4ad16fc 100644
--- a/String.cpp
+++ b/String.cpp
@@ -5,7 +5,7 @@
 #include <math.h>
 #include <stdarg.h>
 
-#include "String.h"
+#include "SString.h"
 
 char* utohex(uint value, byte size, char* string, bool upper);
 extern char* itoa(int value, char* string, int radix);
diff --git a/Sys.h b/Sys.h
index 870cde8c..4d12b164 100644
--- a/Sys.h
+++ b/Sys.h
@@ -41,7 +41,7 @@ void assert_failed2(const char* msg, const char* file, unsigned int line);
 #endif
 
 #include "Type.h"
-#include "String.h"
+#include "SString.h"
 
 /* 引脚定义 */
 #include "Platform\Pin.h"