diff --git a/src/Editor/GetDistanceServices.ts b/src/Editor/GetDistanceServices.ts
index bf49ab04f..ed7ce9b5c 100644
--- a/src/Editor/GetDistanceServices.ts
+++ b/src/Editor/GetDistanceServices.ts
@@ -97,6 +97,9 @@ export class GetDistanceServices
         let dynInput = new GetDistancePromptBlock(dynManage);
         dynInput.Value = prompt.Default;
 
+        if (!prompt.Msg)
+            prompt.Msg = "请输入距离或者点取距离:";
+
         if (prompt.Default !== undefined)
             prompt.Msg += `<${prompt.Default}>`;
         dynInput.UpdatePrompt(prompt.Msg);
diff --git a/src/Geometry/SpaceParse/ClampSpaceParse.ts b/src/Geometry/SpaceParse/ClampSpaceParse.ts
index bd28e1cd6..ceab4df5a 100644
--- a/src/Geometry/SpaceParse/ClampSpaceParse.ts
+++ b/src/Geometry/SpaceParse/ClampSpaceParse.ts
@@ -87,18 +87,18 @@ export class ClampSpaceParse extends ISpaceParse
     async ParseSignalBoard()
     {
         let res = await this.GetSignalDist();
-        if (res.Status === PromptStatus.OK)
+        if (res.Status === PromptStatus.OK && res.Distance > 0)
         {
             let dist = res.Distance;
             this._signalDist = dist;
 
             let br = this.m_Boards[0];
 
-            let mat = br.RotateMat;
-            let p1 = new Vector3(0, 0, 0).applyMatrix4(mat);
-            let p2 = new Vector3(br.Width, br.Height, -dist).applyMatrix4(mat);
-            let p3 = new Vector3(0, 0, br.Thickness).applyMatrix4(mat);
-            let p4 = new Vector3(br.Width, br.Height, br.Thickness + dist).applyMatrix4(mat);
+            let mtx = this.m_SpaceOCSInv.clone().multiply(br.OCS);
+            let p1 = new Vector3(0, 0, 0).applyMatrix4(mtx);
+            let p2 = new Vector3(br.Width, br.Height, -dist).applyMatrix4(mtx);
+            let p3 = new Vector3(0, 0, br.Thickness).applyMatrix4(mtx);
+            let p4 = new Vector3(br.Width, br.Height, br.Thickness + dist).applyMatrix4(mtx);
 
             let boxs = [new Box3Ext().setFromPoints([p1, p2]), new Box3Ext().setFromPoints([p3, p4])];
 
diff --git a/src/Geometry/SpaceParse/ClampSpaceParseDist.ts b/src/Geometry/SpaceParse/ClampSpaceParseDist.ts
index 0f7e505da..82a1d7392 100644
--- a/src/Geometry/SpaceParse/ClampSpaceParseDist.ts
+++ b/src/Geometry/SpaceParse/ClampSpaceParseDist.ts
@@ -1,12 +1,16 @@
 import { ClampSpaceParse } from "./ClampSpaceParse";
 import { app } from "../../ApplicationServices/Application";
-import { PromptDistendResult } from "../../Editor/PromptResult";
+import { PromptDistendResult, PromptStatus } from "../../Editor/PromptResult";
 
+let Default = 100;
 export class ClampSpaceParseDist extends ClampSpaceParse
 {
     //virtual (请重载) 指定用户选择单块板的延伸空间
     async GetSignalDist(): Promise<PromptDistendResult>
     {
-        return app.Editor.GetDistance({});
+        let res = await app.Editor.GetDistance({ Default });
+        if (res.Status === PromptStatus.OK)
+            Default = res.Distance;
+        return res;
     }
 }