diff --git a/docs/source/conf.py b/docs/source/conf.py
index 27974fc..388eefe 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -22,7 +22,7 @@
 author = 'LinkunGao'
 
 # The full version, including alpha/beta/rc tags
-release = 'v1.14.4'
+release = 'v1.14.5'
 
 
 # -- General configuration ---------------------------------------------------
diff --git a/docs/source/release/release.md b/docs/source/release/release.md
index e47eb60..07f7288 100644
--- a/docs/source/release/release.md
+++ b/docs/source/release/release.md
@@ -1615,3 +1615,7 @@ sceneIn?.loadNrrd(url, loadBar1, false, funa, opts);
 ## Release v1.14.4
 
 - Fixed bug: draw lines not continuous on label 1, 2, 3.
+
+## Release v1.14.5
+
+- Fixed GUI overload issue in copperNrrdLoader.
diff --git a/package-lock.json b/package-lock.json
index b99a16f..86098c6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "copper3d_visualisation",
-  "version": "1.14.4",
+  "version": "1.14.5",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "copper3d_visualisation",
-      "version": "1.14.4",
+      "version": "1.14.5",
       "license": "Apache-2.0",
       "dependencies": {
         "@types/dat.gui": "^0.7.9",
diff --git a/package.json b/package.json
index 2ccd882..9a0d605 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "copper3d_visualisation",
   "description": "A 3d visualisation package base on threejs provides multiple scenes and Nrrd image load funtion.",
-  "version": "1.14.4",
+  "version": "1.14.5",
   "main": "dist/bundle.umd.js",
   "moudle": "dist/bundle.esm.js",
   "types": "dist/types/index.d.ts",
diff --git a/src/Loader/copperNrrdLoader.ts b/src/Loader/copperNrrdLoader.ts
index af1a103..4cb3691 100644
--- a/src/Loader/copperNrrdLoader.ts
+++ b/src/Loader/copperNrrdLoader.ts
@@ -20,7 +20,8 @@ loader = new NRRDLoader();
 // loader.setSegmentationn(true);
 
 let cube: THREE.Mesh;
-let gui: GUI;
+let gui: GUI | undefined;
+let oldGuiDom:HTMLDivElement;
 
 let CircleGeometry = new THREE.RingGeometry(5, 6, 30);
 let CircleMaterial = new THREE.MeshBasicMaterial({
@@ -158,6 +159,7 @@ export function copperNrrdLoader(
       } else {
         callback && callback(volume, nrrdMeshes, nrrdSlices);
       }
+      gui = undefined
     },
     function (xhr: ProgressEvent<EventTarget>) {
       loadingContainer.style.display = "flex";
@@ -427,13 +429,17 @@ export function addBoxHelper(
 }
 
 function configGui(opts?: optsType) {
+  
   if (opts && opts.openGui) {
     if (opts.container) {
+      if(oldGuiDom){
+        opts.container.removeChild(oldGuiDom);
+      }
       gui = new GUI({
         width: 260,
         autoPlace: false,
       });
-
+      oldGuiDom = gui.domElement as HTMLDivElement;
       opts.container.appendChild(gui.domElement);
     } else {
       gui = new GUI();
diff --git a/src/index.ts b/src/index.ts
index c598586..668f33f 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -36,10 +36,10 @@ import {
 
 import "./css/style.css";
 
-export const REVISION = "v1.14.4";
+export const REVISION = "v1.14.5";
 
 console.log(
-  "%cCopper3D Visualisation %cBeta:v1.14.4",
+  "%cCopper3D Visualisation %cBeta:v1.14.5",
   "padding: 3px;color:white; background:#023047",
   "padding: 3px;color:white; background:#f50a25"
 );