To provide a rendering processing method using multiprocessing.

A rendering processing method using multiprocessing includes the steps of: using a pre-rendering management unit to divide an application execution window into frames and to generate a rendering processing instruction for rendering an image for each frame; using a rendering management unit to generate a rendering image for each frame in accordance with the generated rendering processing instruction; and using a memory unit to store the generated rendering image. The steps of generating the rendering processing instruction and of generating the rendering image are processed by multiple threads. The method can improve rendering processing speed.