diff --git a/ZCppMain/ZMainHead.H b/ZCppMain/ZMainHead.H
index fd57171..0df5a56 100644
--- a/ZCppMain/ZMainHead.H
+++ b/ZCppMain/ZMainHead.H
@@ -7226,6 +7226,14 @@ namespace ZNsMain
         }/*
         ZtCBaseList& SwapLinkNext(ZCLink& AR_LinkPrev)*/
 
+        ZtCBaseList& SwapLinkPrev(ZCLink& AR_LinkNext)
+        {
+            // 이전 링크와 위치를 맞바꾼다.
+
+            return SwapLinkNext(*AR_LinkNext.mp_PrevLink);
+        }/*
+        ZtCBaseList& SwapLinkPrev(ZCLink& AR_LinkNext)*/
+
 
         void SendOutHead(ZCLink& AR_CutLink, TypeThis& rhs)
         {
diff --git a/ZCppMainTest/ZtCBaseList_000.cpp b/ZCppMainTest/ZtCBaseList_000.cpp
index eb079c0..a487c68 100644
--- a/ZCppMainTest/ZtCBaseList_000.cpp
+++ b/ZCppMainTest/ZtCBaseList_000.cpp
@@ -567,6 +567,17 @@ namespace ZNsMain
                 cout<<"*****************************************************"<<endl;
                 VO_ZCBaseListEx10_2.IterElemLinkRev(&ShowNode10_3, ZftMCP(VI_CallCnt=0));
 
+                cout<<endl<<"# after VO_ZCBaseListEx10_2.SwapLinkPrev(2th)"<<endl;
+                VO_ZCBaseListEx10_2.SwapLinkPrev(VO_ZCBaseListEx10_2.HeadRef(1));
+                cout<<"*****************************************************"<<endl;
+                VO_ZCBaseListEx10_2.IterElemLink(&ShowNode10_3, ZftMCP(VI_CallCnt=0));
+
+                cout<<endl<<"# after VO_ZCBaseListEx10_2.SwapLinkPrev(last)"<<endl;
+                VO_ZCBaseListEx10_2.SwapLinkPrev(VO_ZCBaseListEx10_2.TailRef());
+                cout<<"*****************************************************"<<endl;
+                VO_ZCBaseListEx10_2.IterElemLink(&ShowNode10_3, ZftMCP(VI_CallCnt=0));
+
+
                 return 0;
             }/*
             static int Main(int AI_ArgCnt=0, char* APP_ArgVal[]=0)*/