diff --git a/packages/react/src/component/LayerContext.tsx b/packages/react/src/component/LayerContext.tsx
index 4c6378a13c..4adf6479b1 100644
--- a/packages/react/src/component/LayerContext.tsx
+++ b/packages/react/src/component/LayerContext.tsx
@@ -1,7 +1,8 @@
 import { ILayer } from '@antv/l7';
 import { createContext, useContext } from 'react';
 
-export const LayerContext = createContext({});
+// tslint:disable-next-line: no-object-literal-type-assertion
+export const LayerContext = createContext<ILayer | undefined>({} as ILayer);
 export function useLayerValue(): ILayer {
   return (useContext(LayerContext) as unknown) as ILayer;
 }