diff --git a/STM32F103_App1/HardWare/NETWORK/net_wifi.c b/STM32F103_App1/HardWare/NETWORK/net_wifi.c
index c22df8f..be07dbb 100644
--- a/STM32F103_App1/HardWare/NETWORK/net_wifi.c
+++ b/STM32F103_App1/HardWare/NETWORK/net_wifi.c
@@ -180,6 +180,13 @@ void net_wifi_process(void)
 }
 
 /*==== 上行发布 ====*/
+/* QoS1 发布(仅平台指令应答用): 带报文标识符, 调用方自行等 PUBACK */
+int net_wifi_publish_qos1(const char *json, uint16_t pkt_id)
+{
+    if (!g_wifi_mqtt_ready) return -1;
+    return mqttc_publish_qos1(s_topic_up, json, pkt_id);
+}
+
 void net_wifi_publish_up(const char *json)
 {
     if (!g_wifi_mqtt_ready) return;
diff --git a/STM32F103_App1/HardWare/NETWORK/net_wifi.h b/STM32F103_App1/HardWare/NETWORK/net_wifi.h
index 4aeabb1..fd0e4f1 100644
--- a/STM32F103_App1/HardWare/NETWORK/net_wifi.h
+++ b/STM32F103_App1/HardWare/NETWORK/net_wifi.h
@@ -13,6 +13,7 @@ extern volatile uint8_t g_wifi_restore_req;   /* 
 
 int  net_wifi_init(void);    /* 阻塞建链：复位→连AP(已存→固定→SmartConfig)→透传→MQTT, 0=就绪 */
 void net_wifi_process(void); /* 非阻塞轮询：解析下行报文 + 心跳保活 */
-void net_wifi_publish_up(const char *json); /* 向 /iot/data/up/<cid> 发布 JSON */
+void net_wifi_publish_up(const char *json);
+int  net_wifi_publish_qos1(const char *json, uint16_t pkt_id); /* QoS1 发布(指令应答用), 0=已发 -1=未就绪 */ /* 向 /iot/data/up/<cid> 发布 JSON */
 
 #endif /* NET_WIFI_H */
diff --git a/STM32F103_App1/HardWare/NETWORK/network.c b/STM32F103_App1/HardWare/NETWORK/network.c
index 312d78a..7bfea01 100644
--- a/STM32F103_App1/HardWare/NETWORK/network.c
+++ b/STM32F103_App1/HardWare/NETWORK/network.c
@@ -11,6 +11,7 @@
 
 #include "network.h"
 #include "net_wifi.h"
+#include "mqtt_client.h"
 #include "hlw8032.h"
 #include "feed_scale.h"
 #include "net_wifi_ota.h"
@@ -347,10 +348,10 @@ void NET_publish_response(const char *cmd_id, int ok, const char *msg)
 int NET_publish_response_wait(const char *cmd_id, int ok, const char *msg)
 {
     if (g_net_tx_busy) { log_info("> NET: 应答上报被丢弃 (OTA忙)"); return -1; }
-    if (net_at_trylock() != 0) { log_info("> NET: 应答上报被丢弃 (AT 忙)"); return -1; }
     const char *text = msg ? msg : (ok ? "OK" : "command failed");
     int rc = 0;
     if (s_backend == NET_BACKEND_4G) {
+        if (net_at_trylock() != 0) { log_info("> NET: 应答上报被丢弃 (AT 忙)"); return -1; }
         static char cmd[256];
         sprintf(cmd, "AT+MPUB=\\22/iot/data/up/%s\\22,0,0,\\22{\\22id\\22:\\22%s\\22,\\22code\\22:0,\\22message\\22:\\22%s\\22}\\22",
             MqttInfoStr.ClientID, cmd_id, text);
@@ -358,13 +359,27 @@ int NET_publish_response_wait(const char *cmd_id, int ok, const char *msg)
             rc = -1;
             log_warn("> NET: 指令应答发送失败(重试后仍无 OK)");
         }
+        net_at_unlock();
     } else {
+        /* WiFi(软件 MQTT): QoS1 发布 + 等 PUBACK(broker 确认收到), 最多 3 次
+         * 注意: 收包解析在 net 任务, 等 PUBACK 必须释放 AT 锁, 否则死锁 */
         char json[200];
         snprintf(json, sizeof(json),
             "{\"id\":\"%s\",\"code\":0,\"message\":\"%s\"}", cmd_id, text);
-        net_wifi_publish_up(json);
+        static uint16_t pkt_id = 0;
+        rc = -1;
+        for (int attempt = 0; attempt < 3; attempt++) {
+            net_at_lock();
+            pkt_id++;
+            if (pkt_id == 0) pkt_id = 1;
+            int prc = net_wifi_publish_qos1(json, pkt_id);
+            net_at_unlock();
+            if (prc != 0) break;   /* 未就绪, 不必重试 */
+            if (mqttc_wait_puback(pkt_id, 1500) == 0) { rc = 0; break; }
+            log_warn("> NET: 应答 PUBACK 超时, 重试 %d/3", attempt + 1);
+        }
+        if (rc != 0) log_warn("> NET: 指令应答发送失败(PUBACK 超时)");
     }
-    net_at_unlock();
     return rc;
 }
 
diff --git a/STM32F103_App1/HardWare/WIFI/mqtt_client.c b/STM32F103_App1/HardWare/WIFI/mqtt_client.c
index c6dd82e..57b506c 100644
--- a/STM32F103_App1/HardWare/WIFI/mqtt_client.c
+++ b/STM32F103_App1/HardWare/WIFI/mqtt_client.c
@@ -154,6 +154,45 @@ int mqttc_publish(const char *topic, const char *payload)
     return 0;
 }
 
+/*==== QoS1 发布 + PUBACK 等待(仅平台指令应答用, 确认 broker 收到) ====*/
+static volatile uint8_t  s_puback_ok = 0;
+static volatile uint16_t s_puback_id = 0;
+
+int mqttc_publish_qos1(const char *topic, const char *payload, uint16_t pkt_id)
+{
+    uint16_t pos = 0;
+    uint32_t rl = 2 + strlen(topic) + 2 + strlen(payload);   /* +2 为报文标识符 */
+
+    if (rl + 5 > MQTT_TX_BUF_SIZE) {
+        log_warn("> WiFi MQTT: publish 报文过长 (%u)", (unsigned)rl);
+        return -1;
+    }
+
+    tx_buf[pos++] = 0x32;   /* PUBLISH, QoS1 */
+    pos += encode_rl(tx_buf + pos, rl);
+    pos = put_str(tx_buf, pos, topic);
+    tx_buf[pos++] = (uint8_t)(pkt_id >> 8);
+    tx_buf[pos++] = (uint8_t)(pkt_id & 0xFF);
+    memcpy(tx_buf + pos, payload, strlen(payload));
+    pos += strlen(payload);
+
+    s_puback_id = pkt_id;
+    s_puback_ok = 0;
+    esp_send(tx_buf, pos);
+    return 0;
+}
+
+/* 等 PUBACK: 收包解析在 net 任务(mqttc_process), 这里只轮询标志 */
+int mqttc_wait_puback(uint16_t pkt_id, int timeout_ms)
+{
+    while (timeout_ms > 0) {
+        if (s_puback_ok && s_puback_id == pkt_id) return 0;
+        bg_delay(20);
+        timeout_ms -= 20;
+    }
+    return -1;
+}
+
 void mqttc_ping(void)
 {
     tx_buf[0] = 0xC0;
@@ -242,6 +281,12 @@ int mqttc_process(void)
         if (rl >= 3 && pkt[2] != 0x80) s_suback_ok = 1;
         else log_warn("> WiFi MQTT: SUBACK 被拒绝");
         break;
+    case 4:  /* PUBACK: 0x40 0x02 pktIdHi pktIdLo */
+        if (rl >= 2) {
+            uint16_t id = (uint16_t)(((uint16_t)pkt[0] << 8) | pkt[1]);
+            if (id == s_puback_id) s_puback_ok = 1;
+        }
+        break;
     case 13: /* PINGRESP */
         g_mqttc_ping_outstanding = 0;
         break;
diff --git a/STM32F103_App1/HardWare/WIFI/mqtt_client.h b/STM32F103_App1/HardWare/WIFI/mqtt_client.h
index 7de0353..e9e7868 100644
--- a/STM32F103_App1/HardWare/WIFI/mqtt_client.h
+++ b/STM32F103_App1/HardWare/WIFI/mqtt_client.h
@@ -16,7 +16,9 @@ extern volatile uint8_t g_mqttc_ping_outstanding;
 void mqttc_init(const char *client_id, const char *user, const char *pass);
 int  mqttc_connect(void);                       /* 发 CONNECT 等 CONNACK, 0=成功 */
 int  mqttc_subscribe(const char *topic);        /* 发 SUBSCRIBE(QoS0) 等 SUBACK, 0=成功 */
-int  mqttc_publish(const char *topic, const char *payload); /* QoS0 发布, 0=成功 */
+int  mqttc_publish(const char *topic, const char *payload);   /* QoS0 发布, 0=成功 */
+int  mqttc_publish_qos1(const char *topic, const char *payload, uint16_t pkt_id); /* QoS1 发布(带报文标识符), 0=成功 */
+int  mqttc_wait_puback(uint16_t pkt_id, int timeout_ms);   /* 等 PUBACK(调用方不得持有 net_at 锁), 0=收到 */ /* QoS0 发布, 0=成功 */
 void mqttc_ping(void);                          /* 发 PINGREQ */
 
 /* 从共享接收缓冲解析一条完整 MQTT 报文（粘包/半包安全）。
diff --git a/鐗堟湰璇存槑.md b/鐗堟湰璇存槑.md
index 7c46d66..07e3022 100644
--- a/鐗堟湰璇存槑.md
+++ b/鐗堟湰璇存槑.md
@@ -21,9 +21,12 @@
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+  PUBACK 瑙ｆ瀽锛宐roker 鏀跺埌鎵嶇畻鎴愬姛锛屾渶澶氶噸璇� 3 娆★紱绛� PUBACK 鏃堕噴鏀� AT 閿侀槻姝婚攣锛夊師鍥狅細鏅�氱増 NET_publish_response 鍙戝畬灏辫蛋涓嶇瓑 OK锛孶ART 搴旂瓟浜ょ粐/
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