diff --git a/packages/core/src/constant/element.ts b/packages/core/src/constant/element.ts
new file mode 100644
index 0000000..27e107f
--- /dev/null
+++ b/packages/core/src/constant/element.ts
@@ -0,0 +1,6 @@
+export const elementTypes = {
+  'text': true,
+  'rect': true,
+  'image': true,
+  'svg': true,
+}
\ No newline at end of file
diff --git a/packages/core/src/index.ts b/packages/core/src/index.ts
index 8a9fb41..d56c2cd 100644
--- a/packages/core/src/index.ts
+++ b/packages/core/src/index.ts
@@ -16,12 +16,12 @@ import { Element } from './lib/element';
 import { Helper } from './lib/helper';
 import { mergeConfig } from './lib/config';
 import { CoreEvent, TypeCoreEventArgMap } from './lib/core-event';
+import { parseData } from './lib/parse';
 
 const { time } = util;
 const { deepClone } = util.data;
 const { createUUID } = util.uuid;
 
-
 enum Mode {
   NULL = 'null',
   SELECT_ELEMENT = 'select-element',
@@ -141,7 +141,7 @@ class Core {
     return deepClone(this[_data]);
   }
 
-  initData(data: TypeData): void {
+  initData(data: any | TypeData): void {
     if (this[_hasInitedData] === true) {
       return;
     }
@@ -150,8 +150,8 @@ class Core {
     this[_hasInitedData] = true;
   }
 
-  setData(data: TypeData): void {
-    this[_data] = this[_element].initData(deepClone(data));
+  setData(data: any | TypeData): void {
+    this[_data] = this[_element].initData(deepClone(parseData(data)));
     this.draw();
   }
 
diff --git a/packages/core/src/lib/parse.ts b/packages/core/src/lib/parse.ts
new file mode 100644
index 0000000..2e85154
--- /dev/null
+++ b/packages/core/src/lib/parse.ts
@@ -0,0 +1,36 @@
+import { TypeData, TypeElement, TypeElemDesc } from '@idraw/types';
+import { elementTypes } from './../constant/element';
+
+export function parseData(data: any): TypeData {
+  const result: TypeData = {
+    elements: [],
+  };
+  if (Array.isArray(data?.elements)) {
+    data?.elements.forEach((elem: any = {}) => {
+      if (isElement(elem)) {
+        result.elements.push(elem);
+      }
+    });
+  }
+  if (typeof data.bgColor === 'string') {
+    result.bgColor = data.bgColor; 
+  }
+  return result;
+}
+
+function isElement(
+  elem: TypeElement<keyof TypeElemDesc>
+): boolean{
+  if (!(isNumber(elem.x) && isNumber(elem.y) && isNumber(elem.w) && isNumber(elem.h))) {
+    return false;
+  }
+  if (!(typeof elem.type === 'string' && Object.keys(elementTypes).includes(elem.type))) {
+    return false;
+  }
+  return true;
+} 
+
+
+function isNumber(num: any) {
+  return (num >= 0 || num < 0)
+}
\ No newline at end of file