diff --git a/apps/chrg/applications/thread/chrg_roll_sou.c b/apps/chrg/applications/thread/chrg_roll_sou.c
index a141d7a..34e6542 100644
--- a/apps/chrg/applications/thread/chrg_roll_sou.c
+++ b/apps/chrg/applications/thread/chrg_roll_sou.c
@@ -22,6 +22,7 @@
 #include <rtdbg.h>
 
 #define SOU_MUTEX_TIMEOUT_MS    100
+#define SOU_RESPONSE_TIMEOUT_MS 20
 #define SOU_COM_MAX_ATTEMPTS    3
 
 chrg_rollsou_com_t g_sou_com_batch = {0};
@@ -77,6 +78,23 @@ int chrg_sou_com_batch_submit(eIDX_SOU_CH ch, const rt_uint16_t *regs,
 		pBatch->cur_idx = 0;
 	}
 
+	/*
+	 * 电流调节采用最新值有效策略。若同一通道仍有尚未发送的电流命令，
+	 * 直接覆盖旧值，避免四通道快速测试时队列积累过时的电流设置。
+	 * 当前命令已经发送时不覆盖，保证响应仍与原命令匹配。
+	 */
+	if ((count == 1) && (regs[0] == (REG_CURRENT_OUT + 1))) {
+		for (i = pBatch->cur_idx; i < pBatch->reg_cnt; i++) {
+			if (pBatch->reg_list[i] == regs[0]) {
+				pBatch->val_list[i] = vals[0];
+				pBatch->pending = RT_TRUE;
+				pROLL->run = RUN_COM;
+				rt_mutex_release(pTHR->mutex);
+				return 0;
+			}
+		}
+	}
+
 	if ((pBatch->reg_cnt > SOU_COM_BATCH_REG_MAX) ||
 		(count > (SOU_COM_BATCH_REG_MAX - pBatch->reg_cnt))) {
 		LOG_E("sou com batch reg full: ch=%d queued=%d append=%d max=%d",
@@ -391,7 +409,8 @@ void chrg_roll_sou_thread_entry (void *data)
 		}
 
 		pMB_R = RT_NULL;
-		ret = rt_mb_recv(pTS->mb, (rt_uint32_t *)&pMB_R, 50);
+		ret = rt_mb_recv(pTS->mb, (rt_uint32_t *)&pMB_R,
+			rt_tick_from_millisecond(SOU_RESPONSE_TIMEOUT_MS));
 		if ((RT_EOK == ret) && (RT_NULL != pMB_R)) {
 			rt_bool_t response_valid;
 
@@ -424,7 +443,6 @@ void chrg_roll_sou_thread_entry (void *data)
 			}
 
 			sou_msg_free(&pMB_R);
-			rt_thread_mdelay(20);
 		} else {
 			sou_msg_free(&pMB_R);
 			if ((run == RUN_COM) && command_valid) {