diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/chat/create-chat.dialog.component.html b/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/chat/create-chat.dialog.component.html
index 6cfcb3ba..f6a91939 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/chat/create-chat.dialog.component.html
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/chat/create-chat.dialog.component.html
@@ -68,7 +68,7 @@
                 <i class="mid mid-24 mdi-account-multiple"></i>
               </button>
             </ng-template>
-            <div class="mat-tab-frame">
+            <div class="mat-tab-frame dialog-tab-grouplist">
               <div>
                 <ucap-organization-tenant-search
                   [companyList]="companyList$ | async"
@@ -81,7 +81,7 @@
               </div>
               <div
                 [style.display]="isShowSearch ? 'none' : 'block'"
-                class="list-panel"
+                class="group"
               >
                 <ucap-group-expansion-panel
                   #groupExpansionPanel
@@ -103,7 +103,7 @@
                     [checkDisabled]="!getCheckableUser(userInfo)"
                     (checkUser)="onCheckUser($event)"
                     (click)="onToggleUser(userInfo)"
-                    class="list-item-frame"
+                    class="group-list-item"
                   >
                   </ucap-profile-user-list-item>
                 </ucap-group-expansion-panel>
@@ -154,7 +154,7 @@
                 <i class="mid mid-24 mdi-file-tree"></i>
               </button>
             </ng-template>
-            <div>
+            <div class="dialog-tab-orglist">
               <app-layout-chat-left-sidenav-organization
                 [showTitle]="false"
                 [selectedUserList]="selectedUserList"
@@ -164,7 +164,7 @@
                 (checkAllUser)="onCheckAllUser($event)"
                 (checkUser)="onCheckUser($event)"
                 (toggleUser)="onToggleUser($event)"
-                class="dialog-org"
+                class="oraganization"
               >
               </app-layout-chat-left-sidenav-organization>
             </div>
diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/chat/create-chat.dialog.component.scss b/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/chat/create-chat.dialog.component.scss
index 25101ef4..9455060d 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/chat/create-chat.dialog.component.scss
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/chat/create-chat.dialog.component.scss
@@ -1,47 +1,67 @@
-.mat-card-header {
-  .mat-card-header-text {
-    margin: 0;
-  }
-  .btn-dialog-close {
-    font-size: 20px;
-    display: flex;
-    margin-left: auto;
-    align-self: flex-start;
-    color: #444444;
+.dialog-creat-chat {
+  & > .mat-card-header {
+    .btn-dialog-close {
+      font-size: 20px;
+      display: flex;
+      margin-left: auto;
+      align-self: flex-start;
+      color: #444444;
+    }
   }
 }
 
-//조직도 레이아웃 변경
-::ng-deep .dialog-org {
-  .ps__rail-y {
-    left: auto !important;
-  }
-
-  .oraganization-tab {
+.dialog-tab-grouplist {
+  height: 380px;
+  width: 100%;
+  .group {
     width: 100%;
-    height: 380px;
-    border-bottom: 1px solid #dddddd;
-    position: relative;
-    .oraganization-tab-tree {
-      display: inline-flex;
-      width: 50%;
-      height: 100% !important;
-      border-right: 1px solid #dddddd;
-      overflow: auto;
-      .tab-tree-frame {
-        width: 100%;
-        height: 100%;
+    height: calc(100% - 50px);
+    &-expansion {
+      .list-item {
+        height: 60px;
       }
     }
-    .select-list {
-      display: inline-flex;
-      flex-direction: column;
-      width: 50%;
-      height: 100% !important;
-      overflow: auto;
-      .search-list {
+    &-list-item {
+      width: 100%;
+    }
+  }
+}
+
+::ng-deep .dialog-tab-orglist {
+  width: 100%;
+  height: 380px;
+  border-bottom: 1px solid #dddddd;
+  position: relative;
+  .oraganization {
+    .ps__rail-y {
+      left: auto !important;
+    }
+    &-tab {
+      width: 100%;
+      height: 380px;
+      border-bottom: 1px solid #dddddd;
+      position: relative;
+      &-tree {
+        display: inline-flex;
+        width: 50%;
+        height: 100% !important;
+        border-right: 1px solid #dddddd;
         overflow: auto;
-        height: calc(100% - 40px);
+        .tab-tree-frame {
+          width: 100%;
+          height: 100%;
+        }
+      }
+      .select-list {
+        display: inline-flex;
+        flex-direction: column;
+        width: 50%;
+        height: 100% !important;
+        overflow: auto;
+        .search-list {
+          overflow: auto;
+          height: calc(100% - 40px);
+        }
       }
     }
   }
@@ -82,7 +102,7 @@
   }
 }
 
-::ng-deep .mat-dialog-container {
+/*::ng-deep .mat-dialog-container {
   .mat-tab-body-wrapper {
     height: 380px;
     width: 100%;
@@ -123,3 +143,4 @@
   width: 100%;
   height: 100%;
 }
+*/