diff --git a/test/case52/src/testcase52.c b/test/case52/src/testcase52.c
index 7efd53a..3ddafc7 100755
--- a/test/case52/src/testcase52.c
+++ b/test/case52/src/testcase52.c
@@ -260,7 +260,7 @@ void *handleUdpTransmission(void *arg)
                     for (cut_i = 0; cut_i < (8-r_idx); cut_i++)
                     {
                         memcpy(udp_data_buffer, 
-                            (char*)map_base_rx_case52 + r_idx * 16016, 
+                            (char*)map_base_rx_case52 + (r_idx+cut_i) * 16016, 
                             16016);
                         // 发送数据到上位机
                         send_len = sendto(