diff --git a/libraries/oleddrv/font.c b/libraries/oleddrv/font.c
new file mode 100644
--- /dev/null
+++ b/libraries/oleddrv/font.c
@@ -0,0 +1,43 @@
+/*******************************************************************************
+* File Name          : font.c
+* Author             : lxyppc
+* Version            : V1.0
+* Date               : 10-01-21
+* Description        : Font data file
+*******************************************************************************/
+
+/* Includes ------------------------------------------------------------------*/
+#include "DrawText.h"
+#include "font.h"
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/* Install font data for "ËÎÌ塡СÎå"*/
+#include ".\Font\SongSmall5.c"
+
+unsigned long SongSmall5_DrawChar(pfnDrawBlock_t DrawBlock,Pos_t x, Pos_t y,unsigned int ch)
+{
+  if(DrawBlock == 0){
+    if(ch>0x7f){
+      if(x) return SongSmall5_Chinese_Width(ch);
+      else  return SongSmall5_Chinese_Height(ch);
+    }else{
+      if(x) return SongSmall5_English_Width(ch);
+      else  return SongSmall5_English_Height(ch);
+    }
+  }
+  if(ch>0x7F){
+    DrawBlock(x,y,12,12,SongSmall5_Chinese[ch-0x80].data);
+    return SongSmall5_Chinese_Width(ch);
+  }else if(ch>0x1F){
+    DrawBlock(x,y,6,12,SongSmall5_English[ch-0x20].data);
+  }else{
+    DrawBlock(x,y,6,12,SongSmall5_English[0x7F-0x20].data);
+  }
+  return SongSmall5_English_Width(ch);
+}