diff --git a/netty/service/src/main/java/cn/bunny/service/netty/demo4/NettyPromise.java b/netty/service/src/main/java/cn/bunny/service/netty/demo4/NettyPromise.java
new file mode 100644
index 0000000..81f90b2
--- /dev/null
+++ b/netty/service/src/main/java/cn/bunny/service/netty/demo4/NettyPromise.java
@@ -0,0 +1,34 @@
+package cn.bunny.service.netty.demo4;
+
+import io.netty.channel.EventLoop;
+import io.netty.channel.nio.NioEventLoopGroup;
+import io.netty.util.concurrent.DefaultPromise;
+import lombok.extern.slf4j.Slf4j;
+
+import java.util.concurrent.ExecutionException;
+
+@Slf4j
+public class NettyPromise {
+    public static void main(String[] args) throws ExecutionException, InterruptedException {
+        // 准备 EventLoop 对象
+        EventLoop eventLoop = new NioEventLoopGroup().next();
+        // 可以主动创建Promise 结果容器
+        DefaultPromise<Integer> promise = new DefaultPromise<>(eventLoop);
+
+        new Thread(() -> {
+            log.debug("开始计算...");
+            try {
+                Thread.sleep(1000);
+            } catch (InterruptedException e) {
+                // 添加失败结果
+                promise.setFailure(e);
+            }
+            // 填充正常结果，也可以填充异常结果，如果
+            promise.setSuccess(80);
+        }).start();
+
+        // 接受结果的线程
+        log.debug("等待结果");
+        log.debug("结果是：{}", promise.get());
+    }
+}