diff --git a/examples/pka/sec_trng/CMakeLists.txt b/examples/pka/sec_trng/CMakeLists.txt
new file mode 100644
index 00000000..3c6ffcc5
--- /dev/null
+++ b/examples/pka/sec_trng/CMakeLists.txt
@@ -0,0 +1,13 @@
+set(BSP_COMMON_DIR ${CMAKE_SOURCE_DIR}/bsp/bsp_common)
+set(TARGET_REQUIRED_PRIVATE_INCLUDE
+${BSP_COMMON_DIR}/il9341
+${BSP_COMMON_DIR}/touch )
+set(TARGET_REQUIRED_SRCS
+${BSP_COMMON_DIR}/il9341/bsp_il9341.c
+${BSP_COMMON_DIR}/touch/touch.c
+${BSP_COMMON_DIR}/touch/xpt2046.c)
+set(mains main.c)
+generate_bin()
+
+
+
diff --git a/examples/pka/sec_trng/main.c b/examples/pka/sec_trng/main.c
new file mode 100644
index 00000000..8f6c5b58
--- /dev/null
+++ b/examples/pka/sec_trng/main.c
@@ -0,0 +1,104 @@
+/**
+ * @file main.c
+ * @brief
+ *
+ * Copyright (c) 2021 Bouffalolab team
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+#include "hal_spi.h"
+#include "hal_sec_ecdsa.h"
+#include "bsp_il9341.h"
+#include "touch.h"
+
+#define TRNG_TEST_NUM  4
+#define TRNG_DATA_SIZE 32
+
+uint8_t trng_buf[256] = { 0 };
+uint8_t display_buf[128] = { 0 };
+
+static void trng_dump_data(uint8_t data[TRNG_DATA_SIZE])
+{
+    int i;
+    MSG("TRNG data \r\n");
+    for (i = 0; i < TRNG_DATA_SIZE; i++) {
+        MSG("%02d ", data[i]);
+    }
+    MSG("\r\n");
+}
+
+int main(void)
+{
+    int16_t read_x, read_y;
+    uint32_t num_sum[10] = { 0 };
+    uint8_t tmp_digit = 0;
+    uint8_t trng_data[TRNG_TEST_NUM][TRNG_DATA_SIZE];
+    bflb_platform_init(0);
+    LCD_Init();
+    LCD_Clear(0x0000);
+
+    touch_init();
+    // LCD_DrawCircle(100, 100, 20, 0x00ff);
+    // LCD_DrawFont(10, 10, 0xFFFF, 0x0000, (uint8_t *)"123ABC", 6);
+
+    MSG("trng case! \r\n");
+
+    if (sec_eng_trng_enable()) {
+        MSG("sec eng trng enable fail! \r\n");
+    }
+
+    // for (int i = 0; i < TRNG_TEST_NUM; i++) {
+    //     MSG("Reading data from TRNG module\r\n");
+    //     sec_eng_trng_read(trng_data[i]);
+    //     trng_dump_data(trng_data[i]);
+    // }
+
+    // sec_eng_trng_disable();
+
+    MSG("trng case success! \r\n");
+    uint8_t read_flag = 0;
+    while (1) {
+        device_control(touch_spi, DEVICE_CTRL_SPI_CONFIG_CLOCK, (void *)3600000);
+        while (touch_read(&read_x, &read_y)) {
+        }
+        device_control(touch_spi, DEVICE_CTRL_SPI_CONFIG_CLOCK, (void *)36000000);
+
+        for (int i = 0; i < TRNG_TEST_NUM; i++) {
+            // MSG("Reading data from TRNG module\r\n");
+            sec_eng_trng_read(trng_data[i]);
+            // trng_dump_data(trng_data[i]);
+        }
+
+        display_buf[0] = 0;
+        // for (int i = 0; i < 8; i++) {
+        tmp_digit = trng_data[0][0] % 10;
+        sprintf(trng_buf, "%d  ", tmp_digit);
+        strcat(display_buf, trng_buf);
+        num_sum[tmp_digit]++;
+        // }
+        // LCD_DrawFont(100, 100, 0xFFFF, 0x0000, display_buf, 0x1);
+        // LCD_DrawFont_64x32(10, 10, 0xFFFF, 0x0000, (uint8_t *)"0", 0x1);
+        LCD_DrawFont_64x32(104, 124, 0xFFFF, 0x0000, display_buf, 0x1);
+        for (int j = 0; j < 10; j++) {
+            sprintf(trng_buf, "%d:%d ", j, num_sum[j]);
+            LCD_DrawFont(10, 10 + 25 * j, 0xFFFF, 0x0000, trng_buf, 0xFF);
+        }
+        bflb_platform_delay_ms(10);
+    }
+
+    sec_eng_trng_disable();
+}