diff --git a/protocol-gb32960/src/main/java/com/lingniu/ingest/protocol/gb32960/inbound/Gb32960ChannelHandler.java b/protocol-gb32960/src/main/java/com/lingniu/ingest/protocol/gb32960/inbound/Gb32960ChannelHandler.java
index 021ba60b..97c07101 100644
--- a/protocol-gb32960/src/main/java/com/lingniu/ingest/protocol/gb32960/inbound/Gb32960ChannelHandler.java
+++ b/protocol-gb32960/src/main/java/com/lingniu/ingest/protocol/gb32960/inbound/Gb32960ChannelHandler.java
@@ -240,14 +240,30 @@ public class Gb32960ChannelHandler extends SimpleChannelInboundHandler<byte[]> {
         dispatcher.dispatch(rf);
     }
 
-    /** 统一的 ack 写出 + 日志确认（含完整 hex dump 便于排查对端行为）。 */
+    /**
+     * 统一的 ack 写出 + 日志确认。
+     *
+     * <p>高频 ack（实时/补发上报 0x02/0x03、心跳 0x07）的成功事件降级为 DEBUG，避免每帧
+     * 一条 INFO 淹没日志；稀疏的登入/登出/校时 ack 仍保留 INFO 以便审计。写入失败无论
+     * 哪个标签都走 WARN，不会被抑制。
+     */
     private static void writeAck(ChannelHandlerContext ctx, byte[] ack, String tag) {
         String hex = hex(ack);
+        boolean highFrequency = tag.startsWith("report-ack-") || tag.startsWith("heartbeat-ack");
         ctx.writeAndFlush(Unpooled.wrappedBuffer(ack)).addListener(f -> {
             if (f.isSuccess()) {
-                log.info("[gb32960] {} flushed peer={} len={} hex={}", tag, addr(ctx), ack.length, hex);
+                if (highFrequency) {
+                    if (log.isDebugEnabled()) {
+                        log.debug("[gb32960] {} flushed peer={} len={} hex={}",
+                                tag, addr(ctx), ack.length, hex);
+                    }
+                } else {
+                    log.info("[gb32960] {} flushed peer={} len={} hex={}",
+                            tag, addr(ctx), ack.length, hex);
+                }
             } else {
-                log.warn("[gb32960] {} flush FAILED peer={} len={} hex={}", tag, addr(ctx), ack.length, hex, f.cause());
+                log.warn("[gb32960] {} flush FAILED peer={} len={} hex={}",
+                        tag, addr(ctx), ack.length, hex, f.cause());
             }
         });
     }