1. A method for implementing a graphic rendering engine, comprising: extracting rendering function information of a first graphic processing interface and a second graphic processing interface; encapsulating the first graphic processing interface and the second graphic processing interface as a graphic rendering engine interface; defining member functions of the graphic rendering engine interface according to the rendering function information; implementing a rendering function corresponding to the member functions by calling the first graphic processing interface or the second graphic processing interface with the graphic rendering engine interface; determining whether the first graphic processing interface is abnormal when implementing the rendering function corresponding to the member functions using the first graphic processing interface; and rendering a graphic by calling the second graphic processing interface with the graphic rendering engine interface if the first graphic processing interface used to implement the rendering function corresponding to the member functions is abnormal.