diff --git a/front/app/labeling_tool/annotation.js b/front/app/labeling_tool/annotation.js
index 026445ae..eb44420d 100644
--- a/front/app/labeling_tool/annotation.js
+++ b/front/app/labeling_tool/annotation.js
@@ -83,6 +83,10 @@ class Annotation extends React.Component {
     if (this._deleted.length > 0) {
       return true;
     }
+    if (!this._history.hasUndo()) {
+      // check by history
+      return false;
+    }
     let changedFlag = false;
     this.state.labels.forEach(label => {
       changedFlag = changedFlag || label.isChanged;
@@ -153,7 +157,7 @@ class Annotation extends React.Component {
     const label = new Label(this, this._nextId--, klass, bbox);
     const labels = new Map(this.state.labels);
     labels.set(label.id, label);
-    this._history.addHistory(label, 'create');
+    this._history.addHistory([label], 'create');
     this.setState({ labels });
     return label;
   }
@@ -203,7 +207,7 @@ class Annotation extends React.Component {
       //label.tableItem.addClass('has-image-bbox');
     }
   }
-  remove(id, setHistory=true) {
+  remove(id) {
     let label = this.getLabel(id);
     if (label == null) {
       let txt = 'Label remove error: Error selector "' + id + '"';
@@ -211,9 +215,8 @@ class Annotation extends React.Component {
       return;
     }
 
-    if (setHistory) {
-      this._history.addHistory(label, 'delete');
-    }
+    this._history.addHistory([label], 'delete');
+
     this._controls.getTools().forEach(tool => {
       if (label.bbox[tool.candidateId] != null) {
         tool.disposeBBox(label.bbox[tool.candidateId]);
@@ -244,28 +247,90 @@ class Annotation extends React.Component {
     }
     return null;
   }
+  // methods to history
   createHistory(label) {
-    this._history.createHistory(label, 'change');
+    this._history.createHistory([label], 'change');
   }
   addHistory() {
     this._history.addHistory(null);
   }
-  createFromHistory(id, obj) {
-    let bboxes = {};
-    this._controls.getTools().forEach(tool => {
-      const id = tool.candidateId;
-      if (obj.content[id] != null) {
-        bboxes[id] = tool.createBBox(obj.content[id]);
+  createFromHistory(objects) {
+    const labels = new Map(this.state.labels);
+    let labelList = [];
+    for (let obj of  objects) {
+      let bboxes = {};
+      this._controls.getTools().forEach(tool => {
+        const id = tool.candidateId;
+        if (obj.content[id] != null) {
+          bboxes[id] = tool.createBBox(obj.content[id]);
+        }
+      });
+      let label = new Label(this, obj.id, obj.klass, bboxes);
+      labels.set(label.id, label);
+      if (label.id >= 0) {
+        this._deleted = this._deleted.filter(id => id != label.id);
       }
-    });
-    let label = new Label(this, id, obj.klass, bboxes);
+      labelList.push(label);
+    }
+    this.setState({ labels });
+    return labelList;
+  }
+  removeFromHistory(objects) {
+    const tools = this._controls.getTools();
+    const tgt = this._targetLabel;
     const labels = new Map(this.state.labels);
-    labels.set(label.id, label);
+    for (let obj of objects) {
+      let label = this.getLabel(obj.id);
+
+      tools.forEach(tool => {
+        if (label.bbox[tool.candidateId] != null) {
+          tool.disposeBBox(label.bbox[tool.candidateId]);
+        }
+      });
+      if (tgt != null && label.id === tgt.id) {
+        this._targetLabel = null;
+        tgt.setTarget(false);
+        this._controls.getTools().forEach(tool => {
+          tool.updateTarget(tgt, null);
+        });
+      }
+      if (label.id >= 0) {
+        this._deleted.push(label.id);
+      }
+
+      labels.delete(label.id);
+      label.dispose();
+    }
     this.setState({ labels });
-    return label;
   }
-  removeFromHistory(id) {
-    this.remove(id, false);
+  // methods to clipboard
+  copyLabels(isAll) {
+    let target = [];
+    if (isAll) {
+      target = Array.from(this.state.labels.values());
+    } else if (this._targetLabel != null) {
+      target = [this._targetLabel];
+    }
+    return target.map(label => label.toObject());
+  }
+  pasteLabels(data) {
+    const labels = new Map(this.state.labels);
+    let pastedLabels = [];
+    data.forEach(obj => {
+      let klass = this._klassSet.getByName(obj.name);
+      let bboxes = {};
+      this._controls.getTools().forEach(tool => {
+        const id = tool.candidateId;
+        if (obj.content[id] != null) {
+          bboxes[id] = tool.createBBox(obj.content[id]);
+        }
+      });
+      let label = new Label(this, this._nextId--, klass, bboxes);
+      labels.set(label.id, label);
+      pastedLabels.push(label);
+    });
+    this._history.addHistory(pastedLabels, 'create');
+    this.setState({ labels });
   }
 
   // private
diff --git a/front/app/labeling_tool/clipboard.jsx b/front/app/labeling_tool/clipboard.jsx
new file mode 100644
index 00000000..cf19482e
--- /dev/null
+++ b/front/app/labeling_tool/clipboard.jsx
@@ -0,0 +1,50 @@
+import React from 'react';
+import ReactDOM from 'react-dom';
+
+import Grid from '@material-ui/core/Grid';
+import Button from '@material-ui/core/Button';
+
+class Clipboard extends React.Component {
+
+  constructor(props) {
+    super(props);
+    this.annotation = null;
+    this._controls = props.controls;
+    this.state = {
+      copy: null
+    };
+    props.getRef(this);
+  }
+  init(annotation) {
+    this.annotation = annotation;
+  }
+  hasCopy() {
+    return this.state.copy != null;
+  }
+  copy(isAll) {
+    if (isAll === null) {
+      isAll = this.annotation.getTarget() == null;
+    }
+    const copy = this.annotation.copyLabels(isAll);
+    if (copy.length === 0) {
+      return;
+    }
+    this.setState({ copy: copy });
+  }
+  paste() {
+    const copy = this.state.copy;
+    this.annotation.pasteLabels(copy);
+  }
+
+  render() {
+    return (
+      <Grid item xs={12}>
+        <Button onClick={() => this.copy(false)}>Copy</Button>
+        <Button onClick={() => this.copy(true)}>Copy ALL</Button>
+        <Button onClick={() => this.paste()} disabled={!this.hasCopy()}>Paste</Button>
+      </Grid>
+    );
+  }
+}
+export default Clipboard;
+
diff --git a/front/app/labeling_tool/controls.jsx b/front/app/labeling_tool/controls.jsx
index 036d6c1b..90bb9275 100644
--- a/front/app/labeling_tool/controls.jsx
+++ b/front/app/labeling_tool/controls.jsx
@@ -14,6 +14,7 @@ import {NavigateNext, NavigateBefore} from '@material-ui/icons';
 import KlassSet from 'automan/labeling_tool/klass_set';
 import Annotation from 'automan/labeling_tool/annotation';
 import History from 'automan/labeling_tool/history';
+import Clipboard from 'automan/labeling_tool/clipboard';
 
 import ImageLabelTool from 'automan/labeling_tool/image_label_tool';
 import PCDLabelTool from 'automan/labeling_tool/pcd_label_tool';
@@ -31,6 +32,9 @@ class Controls extends React.Component {
   getKlassSet = (tgt) => { this.klassSet = tgt; }
   history = null;
   getHistory = (tgt) => { this.history = tgt; }
+  clipboard = null;
+  getClipboard = (tgt) => { this.clipboard = tgt; }
+
   // progress
   frameLength = 0;
   // tool status
@@ -89,7 +93,9 @@ class Controls extends React.Component {
     return Promise.all([
       this.annotation.init(this.klassSet, this.history),
       this.klassSet.init(),
-      this.history.init(this.annotation)
+      this.history.init(this.annotation),
+      this.clipboard.init(this.annotation)
+
     ]);
   }
   resize() {
@@ -129,6 +135,16 @@ class Controls extends React.Component {
               this.history.undo();
             }
           }
+        } else if (e.keyCode == 67) {
+          // C key
+          if (e.ctrlKey) {
+            this.clipboard.copy(null);
+          }
+        } else if (e.keyCode == 86) {
+          // V key
+          if (e.ctrlKey) {
+            this.clipboard.paste();
+          }
         } else {
           this.getTool().handles.keydown(e);
         }
@@ -457,9 +473,12 @@ class Controls extends React.Component {
                 <Button onClick={() => this.reloadFrame()}>Reload</Button>
               </Grid>
               <Grid item xs={12}>
-                <Button disabled>Copy</Button>
-                <Button disabled>Paste</Button>
               </Grid>
+                <Clipboard
+                  controls={this}
+                  classes={classes}
+                  getRef={this.getClipboard}
+                />
               <Grid item xs={12}>
                 <History
                   controls={this}
diff --git a/front/app/labeling_tool/history.jsx b/front/app/labeling_tool/history.jsx
index fccea68d..3ccf8155 100644
--- a/front/app/labeling_tool/history.jsx
+++ b/front/app/labeling_tool/history.jsx
@@ -33,17 +33,18 @@ class History extends React.Component {
     'delete': 'create',
   };
   createAntiHist(hist) {
-    const label = this.annotation.getLabel(hist.id);
     const ret = {
       type: this.ANTI_TYPES[hist.type],
-      id: hist.id
     };
     if (hist.type == 'change') {
-      ret.obj = label.toHistory();
+      ret.objects = hist.objects.map(obj => {
+        const label = this.annotation.getLabel(obj.id);
+        return label.toHistory();
+      });
     } else if (hist.type === 'create') {
-      ret.obj = hist.obj
+      ret.objects = hist.objects;
     } else if (hist.type === 'delete') {
-      ret.obj = hist.obj
+      ret.objects = hist.objects;
     } else {
       // error
     }
@@ -51,14 +52,16 @@ class History extends React.Component {
   }
   undoHist(hist) {
     if (hist.type === 'change') {
-      const label = this.annotation.getLabel(hist.id);
-      label.fromHistory(hist.obj);
-      this._controls.selectLabel(label);
+      for (let obj of hist.objects) {
+        const label = this.annotation.getLabel(obj.id);
+        label.fromHistory(obj);
+      }
+      this._controls.selectLabel(hist.objects[0].id);
     } else if (hist.type === 'create') {
-      this.annotation.removeFromHistory(hist.id);
+      this.annotation.removeFromHistory(hist.objects);
     } else if (hist.type === 'delete') {
-      const label = this.annotation.createFromHistory(hist.id, hist.obj);
-      this._controls.selectLabel(label);
+      const labels = this.annotation.createFromHistory(hist.objects);
+      this._controls.selectLabel(labels[0]);
     } else {
       // error
     }
@@ -99,24 +102,25 @@ class History extends React.Component {
       redoHistory: []
     });
   }
-  createHistory(label, type) {
+  createHistory(labels, type) {
     this.tmpHist = {
       type: type,
-      obj: label.toHistory(),
-      id: label.id
+      objects: labels.map(label => label.toHistory())
     };
   }
-  addHistory(label, type) {
+  addHistory(labels, type) {
     const undoHist = this.state.undoHistory.slice();
     const redoHist = [];
     let hist;
-    if (label == null) {
+    if (labels == null) {
       hist = this.tmpHist;
     } else {
+      if (labels.length == 0) {
+        return;
+      }
       hist = {
         type: type,
-        obj: label.toHistory(),
-        id: label.id
+        objects: labels.map(label => label.toHistory())
       };
     }
     undoHist.push(hist);