diff --git a/ide/src/trace/component/SpWelcomePage.ts b/ide/src/trace/component/SpWelcomePage.ts
index 59d9e29a342c59e0c9e15ab1b7e7bdcf25f86a06..1087ab995b337186c48646c99b9fef920a5c3516 100644
--- a/ide/src/trace/component/SpWelcomePage.ts
+++ b/ide/src/trace/component/SpWelcomePage.ts
@@ -30,12 +30,25 @@ export class SpWelcomePage extends BaseElement {
             align-content: center;
             background: var(--dark-background5,#F6F6F6);
         }
+        .home-page{
+            margin-top: -100px;
+        }
         .lit-icon{
+            margin-top: 50px;
+            margin-left: 50px;
             content: var(--dark-img,url('img/pic.png'));
         }
         </style>
         <div>
+            <div class="home-page">
+                <p/>黄区域名: <a href="https://smartperf.rnd.huawei.com/smartperf/">https://smartperf.rnd.huawei.com/smartperf/</a></p>
+                <p/>绿区域名: <a href="https://devecotesting.rnd.huawei.com/smartperf/">https://devecotesting.rnd.huawei.com/smartperf/</a></p>
+                <p/>3ms社区: <a href="http://3ms.huawei.com/km/groups/3956611/home?|=zh-cn">http://3ms.huawei.com/km/groups/3956611/home?|=zh-cn</a></p>
+                <p/>welink讨论群: 群1: 473395703, 群2: 485625665</p>
+            </div>
             <img class="lit-icon" >
+
+            
         </div>
         `;
   }
diff --git a/ide/src/trace/component/trace/base/RangeSelect.ts b/ide/src/trace/component/trace/base/RangeSelect.ts
index 4ab5da2558d09bb5c36eecb7ae84d352621b2032..49843d4cff3c52b7cd101c91ad34eba662e18a57 100644
--- a/ide/src/trace/component/trace/base/RangeSelect.ts
+++ b/ide/src/trace/component/trace/base/RangeSelect.ts
@@ -90,7 +90,7 @@ export class RangeSelect {
         this.endY = 0;
         this.endY2 = mouseEventUp.pageY - this.spacerEL!.getBoundingClientRect().top - this.rowsPaneEL!.scrollTop;
       } else {
-	    this.endY = mouseEventUp.pageY - this.rowsEL!.getBoundingClientRect().top + this.spacerEL.getBoundingClientRect().height;
+        this.endY = mouseEventUp.pageY - this.rowsEL!.getBoundingClientRect().top + this.spacerEL.getBoundingClientRect().height;
         this.endY2 = mouseEventUp.pageY - this.spacerEL!.getBoundingClientRect().top - this.rowsPaneEL!.scrollTop;
       }
       if (this.selectHandler) {
@@ -125,7 +125,7 @@ export class RangeSelect {
         this.endY = 0;
         this.endY2 = mouseEventOut.pageY - this.spacerEL!.getBoundingClientRect().top - this.rowsPaneEL!.scrollTop;
       } else {
-	    this.endY = mouseEventOut.pageY - this.rowsEL!.getBoundingClientRect().top + this.spacerEL.getBoundingClientRect().height;
+        this.endY = mouseEventOut.pageY - this.rowsEL!.getBoundingClientRect().top + this.spacerEL.getBoundingClientRect().height;
         this.endY2 = mouseEventOut.pageY - this.spacerEL!.getBoundingClientRect().top - this.rowsPaneEL!.scrollTop;
       }
       if (this.selectHandler && this.isMouseDown) {
@@ -232,6 +232,11 @@ export class RangeSelect {
         rt = new Rect(xMin, Math.min(this.startY2, this.endY2), xMax - xMin, Math.abs(this.startY2 - this.endY2));
       } else {
         bound = it.getBoundingClientRect();
+        if (spacerRect.height > 0 &&
+          (bound.y + bound.height) < (spacerRect.y + spacerRect.height)) {
+          it.rangeSelect = false;
+          return false;
+        }
         itRect = Rect.getIntersect(
           bound,
           new Rect(rowsRect.x, rowsRect.y + spacerRect.height, rowsRect.width, rowsRect.height - spacerRect.height)