diff --git a/src/core/memory/MemoryPool.h b/src/core/memory/MemoryPool.h
index c651ef3..c5da7ea 100644
--- a/src/core/memory/MemoryPool.h
+++ b/src/core/memory/MemoryPool.h
@@ -59,7 +59,35 @@ public:
             this->release(*b);
             delete b;
         });
-    }
+    BlockPtr allocate(std::size_t requiredSize)
+    {
+        if (requiredSize > m_blockSize) {
+            return {};
+        }
+
+        std::size_t slot = 0;
+        {
+            std::lock_guard<std::mutex> lk(m_mutex);
+            if (m_freeSlots.empty()) {
+                return {};
+            }
+            slot = m_freeSlots.front();
+            m_freeSlots.pop();
+            m_inUse[slot] = true;
+        }
+
+        auto* raw = new PoolBlock{
+            m_storage.data() + slot * m_blockSize,
+            m_blockSize,
+            requiredSize,
+            slot,
+        };
+        return BlockPtr(raw, [this](PoolBlock* b) {
+            if (!b) return;
+            this->release(*b);
+            delete b;
+        });
+
 
     void release(const PoolBlock& block)
     {
diff --git a/src/device_bus/manager/DeviceBusManager.cpp b/src/device_bus/manager/DeviceBusManager.cpp
index 09a5e02..997602f 100644
--- a/src/device_bus/manager/DeviceBusManager.cpp
+++ b/src/device_bus/manager/DeviceBusManager.cpp
@@ -36,6 +36,17 @@ void DeviceBusManager::setDirtyCallback(std::function<void()> cb)
 
 bool DeviceBusManager::initialize(const QJsonObject& rootConfig)
 {
+    // 初始化内存池、pipeline引擎、插件管理器、ingress适配器、egress路由器
+    // 内存池是用来存储数据块的
+    // pipeline引擎是用来处理数据流的
+    // 插件管理器是用来管理插件的
+    // ingress适配器是用来将数据推送到 ingress 队列的
+    // egress路由器是用来将数据从 ingress 队列中取出并发送给设备的
+    // 内存池大小为4096，每个数据块大小为4096
+    // pipeline引擎队列大小为4096
+    // 插件管理器插件数量为4096
+    // ingress适配器队列大小为4096
+    // egress路由器队列大小为4096
     if (!m_memoryPool) {
         m_memoryPool = std::make_shared<softbus::core::memory::MemoryPool>(4096, 4096);
     }
diff --git a/src/message_bus/pipeline/PayloadRef.h b/src/message_bus/pipeline/PayloadRef.h
index 167305f..1203e70 100644
--- a/src/message_bus/pipeline/PayloadRef.h
+++ b/src/message_bus/pipeline/PayloadRef.h
@@ -1,5 +1,5 @@
 #pragma once
-
+// 功能 ：定义有效载荷引用 包含数据块、偏移量、长度
 #include <cstddef>
 #include <cstdint>
 #include <memory>
diff --git a/src/message_bus/pipeline/PipelineContext.h b/src/message_bus/pipeline/PipelineContext.h
index 63e299e..2301125 100644
--- a/src/message_bus/pipeline/PipelineContext.h
+++ b/src/message_bus/pipeline/PipelineContext.h
@@ -1,5 +1,6 @@
 #pragma once
 
+// 定义管道上下文 包含设备ID、端点、时间戳、协议提示、跟踪ID、有效载荷、有效载荷大小
 #include <cstddef>
 #include <cstdint>
 
diff --git a/src/message_bus/pipeline/PipelineEngine.cpp b/src/message_bus/pipeline/PipelineEngine.cpp
index d0cdbb1..9c1ae96 100644
--- a/src/message_bus/pipeline/PipelineEngine.cpp
+++ b/src/message_bus/pipeline/PipelineEngine.cpp
@@ -67,6 +67,7 @@ void PipelineEngine::setPluginManager(std::shared_ptr<softbus::core::plugin_syst
     m_pluginManager = std::move(pluginManager);
 }
 
+// 管道引擎运行线程 从 ingress 队列中取出数据 进行处理 然后推送到 egress 队列中
 void PipelineEngine::run()
 {
     while (m_running.load()) {
@@ -77,9 +78,13 @@ void PipelineEngine::run()
         }
 
         const bool framed = stage1Framer(ctx);
+        // 帧解析
         const bool parsed = framed && stage2Parser(ctx);
+        // 过滤
         const bool filtered = parsed && stage3Filter(ctx);
+        // 验证
         const bool valid = filtered && stage4Validator(ctx);
+        // 如果验证失败 则记录错误
         if (!valid) {
             ++m_counters.error;
             continue;
diff --git a/src/message_bus/pipeline/PipelineEngine.h b/src/message_bus/pipeline/PipelineEngine.h
index c11ccb7..fd43a3d 100644
--- a/src/message_bus/pipeline/PipelineEngine.h
+++ b/src/message_bus/pipeline/PipelineEngine.h
@@ -1,5 +1,10 @@
 #pragma once
-
+// 定义管道引擎 包含队列、运行状态、工作线程、计数器、插件管理器
+// 队列是用来存储管道上下文的
+// 运行状态是用来控制引擎的运行和停止的
+// 工作线程是用来处理管道上下文的
+// 计数器是用来统计管道上下文的数量和错误数量的
+// 插件管理器是用来管理插件的
 #include <atomic>
 #include <memory>
 #include <thread>