diff --git a/__test__/Polyline/RemoveRepPos.test.ts b/__test__/Polyline/RemoveRepPos.test.ts
new file mode 100644
index 000000000..c951ee7de
--- /dev/null
+++ b/__test__/Polyline/RemoveRepPos.test.ts
@@ -0,0 +1,33 @@
+import { Polyline } from "../../src/DatabaseServices/Entity/Polyline";
+import { LoadEntityFromFileData } from "../Utils/LoadEntity.util";
+import "../Utils/jest.util";
+
+test('精简多段线', () =>
+{
+    let d =
+        { "file": [1, "Polyline", 10, 2, 182, 0, 1, 3, 0, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1493.5460401813875, 698.3323670493448, 0, 1], 0, 0, 1, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1493.5460401813875, 698.3323670493448, 0, 1], 0, 0, 1, 2, 7, [-529, -397.9970410676705], 0, [-2.9849800837673115, -1], 0, [-250, -1], -0.0006310150531804717, [-250.00252405719763, -0.999996814562558], 0.41569289652442754, [-529.0000031854374, -279.99747594280234], -0.000631015053187468, [-529, -280], 0, [-529, -397.9970410676705], 0, false], "basePt": { "x": 964.5451505016724, "y": 300.3353259816743, "z": 0 }, "ucs": [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1] };
+    let pl = LoadEntityFromFileData(d)[0] as Polyline;
+
+    pl.RemoveRepeatPos();
+
+    expect(pl.EndParam).toMatchNumberSnapshot(0);
+    expect(pl.Length).toMatchNumberSnapshot(3);
+});
+
+//保留最后一个点?
+test('精简多段线2', () =>
+{
+    let d =
+        { "file": [1, "Polyline", 10, 2, 183, 0, 1, 7, 71, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1], 0, 0, 1, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1], 0, 0, 1, 2, 7, [323.78480965026665, 1043.5675363800462], 0, [218.75605375536884, 744.9733873895931], 0, [400.1693593920104, 714.5931687423086], 0, [559.8825088520202, 935.9347617439527], 0, [757.7879331829016, 843.9260995550339], 0, [708.3115771001814, 1097.383923698093], 0, [323.7848611540741, 1043.5676220967764], 0, true], "basePt": { "x": 218.75605375536884, "y": 714.5931687423086, "z": 0 }, "ucs": [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1] };
+    let pl = LoadEntityFromFileData(d)[0] as Polyline;
+    pl.CloseMark = false;
+    pl.RemoveRepeatPos();
+    expect(pl.EndParam).toMatchNumberSnapshot(0);
+    expect(pl.Length).toMatchNumberSnapshot(3);
+
+    pl = LoadEntityFromFileData(d)[0] as Polyline;
+    pl.CloseMark = true;
+    pl.RemoveRepeatPos();
+    expect(pl.EndParam).toMatchNumberSnapshot(0);
+    expect(pl.Length).toMatchNumberSnapshot(3);
+});
diff --git a/__test__/Polyline/__snapshots__/RemoveRepPos.test.ts.snap b/__test__/Polyline/__snapshots__/RemoveRepPos.test.ts.snap
new file mode 100644
index 000000000..47c0f840d
--- /dev/null
+++ b/__test__/Polyline/__snapshots__/RemoveRepPos.test.ts.snap
@@ -0,0 +1,13 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`精简多段线 1`] = `"4"`;
+
+exports[`精简多段线 2`] = `"1462.581"`;
+
+exports[`精简多段线2 1`] = `"6"`;
+
+exports[`精简多段线2 2`] = `"1638.178"`;
+
+exports[`精简多段线2 3`] = `"6"`;
+
+exports[`精简多段线2 4`] = `"1638.178"`;
diff --git a/src/Add-on/Cmd_RemovePolylineRepeatPos.ts b/src/Add-on/Cmd_RemovePolylineRepeatPos.ts
new file mode 100644
index 000000000..5f3a8e85c
--- /dev/null
+++ b/src/Add-on/Cmd_RemovePolylineRepeatPos.ts
@@ -0,0 +1,20 @@
+import { app } from "../ApplicationServices/Application";
+import { Polyline } from "../DatabaseServices/Entity/Polyline";
+import { Command } from "../Editor/CommandMachine";
+import { PromptStatus } from "../Editor/PromptResult";
+
+export class Command_RemovePolylineRepeatPos implements Command
+{
+    async exec()
+    {
+        let ssRes = await app.Editor.GetSelection({
+            Msg: "选择多段线移除重复点:",
+            Filter: { filterTypes: [Polyline] }
+        });
+        if (ssRes.Status !== PromptStatus.OK) return;
+        let ents = ssRes.SelectSet.SelectEntityList as Polyline[];
+
+        for (let en of ents)
+            en.RemoveRepeatPos();
+    }
+}
diff --git a/src/DatabaseServices/Entity/Polyline.ts b/src/DatabaseServices/Entity/Polyline.ts
index 21fdb1559..10f4ef73c 100644
--- a/src/DatabaseServices/Entity/Polyline.ts
+++ b/src/DatabaseServices/Entity/Polyline.ts
@@ -456,6 +456,39 @@ export class Polyline extends Curve
         }
     }
 
+    /**
+     * 删除重复点
+     * @param [fuzz=0.1] 容差=0.1
+     */
+    RemoveRepeatPos(fuzz = 0.1)
+    {
+        let index = 0;
+        let pre = 0;
+        let writed = false;
+        for (let next = 1; next <= this._LineData.length; next++)
+        {
+            if ((!this._ClosedMark && next === this._LineData.length) ||//如果曲线没闭合 则总是保留最后一个点
+                !equalv2(this._LineData[pre].pt, this._LineData[FixIndex(next, this._LineData)].pt, fuzz))
+            {
+                if (!writed)
+                {
+                    this.WriteAllObjectRecord();
+                    writed = true;
+                }
+
+                this._LineData[index] = this._LineData[pre];
+                index++;
+            }
+            pre++;
+        }
+
+        if (equalv2(this._LineData[0].pt, this._LineData[index - 1].pt, fuzz))
+            this._LineData[index - 1].pt.copy(this._LineData[0].pt);
+
+        this._LineData.length = index;
+        this.Update();
+    }
+
     get Length()
     {
         return this.Explode().reduce((l, cu) => l + cu.Length, 0);
diff --git a/src/Editor/CommandRegister.ts b/src/Editor/CommandRegister.ts
index aff9e59ed..7746e5647 100644
--- a/src/Editor/CommandRegister.ts
+++ b/src/Editor/CommandRegister.ts
@@ -212,6 +212,7 @@ import { Command_GroovesModify } from "../Add-on/showModal/GroovesModify";
 import { ShowEditorBBS } from "../Add-on/showModal/ShowModal";
 // import { DrawFloor } from '../Add-on/DrawFloor';
 // import { RevTarget, SaveTarget } from '../Add-on/RenderTarget';
+import { Command_RemovePolylineRepeatPos } from "../Add-on/Cmd_RemovePolylineRepeatPos";
 import { ParseHandle } from "../Add-on/DrawBoard/ParseHandle";
 import { ParseHinge } from "../Add-on/DrawBoard/ParseHinge";
 import { TestFb } from "../Add-on/TestFb";
@@ -581,6 +582,7 @@ export function registerCommand()
         commandMachine.RegisterCommand("TestDrawEdgeGeometry", new Command_TestDrawEdgeGeometry());
     }
     commandMachine.RegisterCommand(CommandNames.SimplifyPolyline, new Command_SimplifyPolyline());
+    commandMachine.RegisterCommand("RemovePolylineRepeatPos", new Command_RemovePolylineRepeatPos());
 
     //用于测试包围盒
     if (IsTest())