The present invention discloses a Chinese character shape deformation method based on smoke simulation. According to the method, a Chinese character is represented by the density field of smoke, and the shape deformation of the Chinese character is the change of the density field of the smoke. In the simulation process of the smoke, the external force field of each frame is calculated and generated according to the current state of the smoke, and the deformation process of the whole Chinese character is determined by a series of Chinese character shapes inputted by a user.