diff --git a/design/codec_hdi/adapt_hdi_2.0.md b/design/codec_hdi/adapt_hdi_2.0.md
index ae3b34057eafe51aa9bfff2890ed78c1ba5833c8..e09e3da49af10b6569fa21cd46051921fe372d76 100644
--- a/design/codec_hdi/adapt_hdi_2.0.md
+++ b/design/codec_hdi/adapt_hdi_2.0.md
@@ -25,16 +25,42 @@ RegisterOneCodecPackage -- 注册一系列插件
 
 ``` plantuml
 
-class Hdi2Adapter 
+class HdiAdapter 
 {
-    // call GetComponentManager
-    // call manager->GetComponentCapbilityList()
-    // call manager->create component
-    //      manager create CodecComponentType 对象, 直接操作它
-    // call manager->destroy component
-    // adapte to component interface :    codec plugin intf ---> hdi 2.0 interface
+    -std::shared_ptr<HdiVdecInBufferMgr> inBufMgr_
+    -std::shared_ptr<HdiVdecOutBufferMgr> outBufMgr_
+    -std::shared_ptr<HdiVdecStateMgr> stateMgr_
+    -std::shared_ptr<HdiVdecParamsMgr> vdecParamsMgr_
 }
 
+class HdiVdecParamsMgr {
+    Init()
+    SetParameter()
+    GetParameter()
+}
+
+class HdiVdecBufferMgr {
+
+}
+
+class HdiVdecInBufferMgr {
+
+}
+
+class HdiVdecOutBufferMgr {
+
+}
+
+class HdiVdecStateMgr {
+
+}
+
+HdiVdecBufferMgr <|-- HdiVdecInBufferMgr
+HdiVdecBufferMgr <|-- HdiVdecOutBufferMgr
+HdiAdapter o-- HdiVdecBufferMgr
+HdiAdapter o-- HdiVdecParamsMgr
+HdiAdapter o-- HdiVdecStateMgr
+
 ```
 
 ## Demo 
@@ -116,9 +142,9 @@ HdiAdapter -> ComponentCallback : CreateComponentCallback()
 HdiAdapter -> Component : GetComponentVersion()
 CodecFilter -> HdiAdapter : filter.Configure() : plugin -> SetParameter()
 HdiAdapter -> HdiAdapter : save tag value used to config omx port
-CodecFilter -> HdiAdapter : filter.Configure() : plugin -> GetParameter()
 HdiAdapter -> Component : ConfigOmx()
 HdiAdapter -> Component : GetBufferInfoOnPort( get buffer size and count from omx )
+CodecFilter -> HdiAdapter : filter.Configure() : plugin -> GetParameter()
 HdiAdapter -> CodecFilter : send omx buffer count and size to filter
 CodecFilter -> HdiAdapter : filter.Configure() : plugin -> QueueOutputBuffer() // queue all output buffer down
 HdiAdapter -> HdiAdapter : outBufferQ_.Push(outputBuffers)