diff --git a/examples/fatfs/main.c b/examples/fatfs/main.c
index 40e5c3c9..0fd92ee3 100644
--- a/examples/fatfs/main.c
+++ b/examples/fatfs/main.c
@@ -55,16 +55,167 @@ void filesystem_init(void)
     }
 }
 
+#define SDU_DATA_CHECK 1
+
+char test_data[] =
+    "I've been reading books of old \r\n\
+    The legends and the myths \r\n\
+    Achilles and his gold \r\n\
+    Hercules and his gifts \r\n\
+    Spiderman's control \r\n\
+    And Batman with his fists\r\n\
+    And clearly I don't see myself upon that list\r\n\
+    But she said, where'd you wanna go?\r\n\
+    How much you wanna risk?\r\n\
+    I'm not looking for somebody\r\n\
+    With some superhuman gifts\r\n\
+    Some superhero\r\n\
+    Some fairytale bliss\r\n\
+    Just something I can turn to\r\n\
+    Somebody I can kiss\r\n\
+    I want something just like this\r\n\r\n";
+
+BYTE RW_Buffer[32 * 1024] = { 0 };
+#if SDU_DATA_CHECK
+BYTE Check_Buffer[sizeof(RW_Buffer)] = { 0 };
+#endif
+
+void fatfs_write_read_test()
+{
+    FRESULT ret;
+    FIL fnew;
+    UINT fnum;
+
+    uint32_t time_node, i, j;
+
+    /* full test data to buff */
+    for (uint32_t size = 0; size < (sizeof(RW_Buffer) - sizeof(test_data)); size += sizeof(test_data)) {
+        memcpy(&RW_Buffer[size], test_data, sizeof(test_data));
+#if SDU_DATA_CHECK
+        memcpy(&Check_Buffer[size], test_data, sizeof(test_data));
+#endif
+    }
+
+    /* write test */
+    LOG_I("\r\n******************** be about to write test... **********************\r\n");
+    ret = f_open(&fnew, "sd:test_file.txt", FA_CREATE_ALWAYS | FA_WRITE);
+    if (ret == FR_OK) {
+        time_node = (uint32_t)bflb_mtimer_get_time_ms();
+        /*write into file*/
+        ret = f_write(&fnew, RW_Buffer, 1024, &fnum);
+        for (i = 0; i < 1024; i++) {
+            ret = f_write(&fnew, RW_Buffer, sizeof(RW_Buffer), &fnum);
+            if (ret) {
+                break;
+            }
+        }
+
+        /* close file */
+        ret |= f_close(&fnew);
+        /* get time */
+        time_node = (uint32_t)bflb_mtimer_get_time_ms() - time_node;
+
+        if (ret == FR_OK) {
+            LOG_I("Write Test Succeed! \r\n");
+            LOG_I("Single data size:%d Byte, Write the number:%d, Total size:%d KB\r\n", sizeof(RW_Buffer), i, sizeof(RW_Buffer) * i >> 10);
+            LOG_I("Time:%dms, Write Speed:%d KB/s \r\n", time_node, ((sizeof(RW_Buffer) * i) >> 10) * 1000 / time_node);
+        } else {
+            LOG_F("Fail to write files(%d) num:%d\n", ret, i);
+            return;
+        }
+    } else {
+        LOG_F("Fail to open or create files.\r\n");
+        return;
+    }
+
+    /* read test */
+    LOG_I("\r\n******************** be about to read test... **********************\r\n");
+    ret = f_open(&fnew, "sd:test_file.txt", FA_OPEN_EXISTING | FA_READ);
+    if (ret == FR_OK) {
+        time_node = (uint32_t)bflb_mtimer_get_time_ms();
+
+        ret = f_read(&fnew, RW_Buffer, 1024, &fnum);
+        for (i = 0; i < 1024; i++) {
+            ret = f_read(&fnew, RW_Buffer, sizeof(RW_Buffer), &fnum);
+            if (ret) {
+                break;
+            }
+        }
+        /* close file */
+        ret |= f_close(&fnew);
+        /* get time */
+        time_node = (uint32_t)bflb_mtimer_get_time_ms() - time_node;
+
+        if (ret == FR_OK) {
+            LOG_I("Read Test Succeed! \r\n");
+            LOG_I("Single data size:%dByte, Read the number:%d, Total size:%d KB\r\n", sizeof(RW_Buffer), i, sizeof(RW_Buffer) * i >> 10);
+            LOG_I("Time:%dms, Read Speed:%d KB/s \r\n", time_node, ((sizeof(RW_Buffer) * i) >> 10) * 1000 / time_node);
+        } else {
+            LOG_F("Fail to read file: (%d), num:%d\n", ret, i);
+            return;
+        }
+    } else {
+        LOG_F("Fail to open files.\r\n");
+        return;
+    }
+
+    /* check data */
+#if SDU_DATA_CHECK
+    LOG_I("\r\n******************** be about to check test... **********************\r\n");
+    ret = f_open(&fnew, "sd:test_file.txt", FA_OPEN_EXISTING | FA_READ);
+    if (ret == FR_OK) {
+        ret = f_read(&fnew, RW_Buffer, 1024, &fnum);
+        for (i = 0; i < 1024; i++) {
+            ret = f_read(&fnew, RW_Buffer, sizeof(RW_Buffer), &fnum);
+            if (ret) {
+                break;
+            }
+            for (j = 0; j < sizeof(RW_Buffer); j++) {
+                if (RW_Buffer[j] != Check_Buffer[j]) {
+                    break;
+                }
+            }
+            if (j < sizeof(RW_Buffer)) {
+                break;
+            }
+        }
+        /* close file */
+        ret |= f_close(&fnew);
+
+        if (ret == FR_OK) {
+            if (i < 1024 || j < sizeof(RW_Buffer)) {
+                LOG_I("Check Test Error! \r\n");
+                LOG_I("Data Error!  Num:%d/1024, Byte:%d/%d", i, j, sizeof(RW_Buffer));
+            } else {
+                LOG_I("Check Test Succeed! \r\n");
+                LOG_I("All Data Is Good! \r\n");
+            }
+
+        } else {
+            LOG_F("Fail to read file: (%d), num:%d\n", ret, i);
+            return;
+        }
+    } else {
+        LOG_F("Fail to open files.\r\n");
+        return;
+    }
+#endif
+}
+
 int main(void)
 {
     board_init();
 
     filesystem_init();
 
+    fatfs_write_read_test();
+
+#ifdef CONFIG_VLIBC
+    LOG_I("\r\n******************** be about to vlibc test... **********************\r\n");
     vlibc_file_t *fp = vlibc_fopen("sd:/test.txt", "w");
 
     if (fp == NULL) {
-        LOG_I("open file error\r\n");
+        LOG_F("open file error\r\n");
     } else {
         LOG_I("open file success\r\n");
         for (uint8_t i = 0; i < 10; i++) {
@@ -76,6 +227,8 @@ int main(void)
         LOG_I("close file success\r\n");
     }
 
+#endif
+
     while (1) {
         bflb_mtimer_delay_ms(200);
     }
diff --git a/examples/fatfs/proj.conf b/examples/fatfs/proj.conf
index 48a9d503..cdee037a 100644
--- a/examples/fatfs/proj.conf
+++ b/examples/fatfs/proj.conf
@@ -1,9 +1,9 @@
 set(CONFIG_VLIBC 1)
 set(CONFIG_VLIBC_FATFS 1)
 
-set(CONFIG_BFLOG 1)
+set(CONFIG_BFLOG 0)
 set(CONFIG_FATFS 1)
 
 set(CONFIG_BSP_COMMON 1)
 set(CONFIG_BSP_SDH_SDCARD 1)
-set(CONFIG_BSP_FATFS_SDH_SDCARD 1)
\ No newline at end of file
+set(CONFIG_FATFS_SDH_SDCARD 1)
\ No newline at end of file