Abstract: The animation of the formation is to separate a series of actions associated with the frame up and play in series so that the naked eye in the case of residue to produce visual images in the activities of misunderstanding that the dynamic performance of a particular form. One producer of the works in time and rhythm accurately grasp the screen, determine the success of the work of the Department.In the fixed cell animation, its production methods are unique, in time and take action on the formation of more stringent requirements. Different time intervals action will bring the performance of different rhythms, and different rhythm to determine the circumstances of this motion animation set the tone affects the whole atmosphere of the film and the script to create the ultimate effect of expression.Decide a motion animation set in the time required for each plot and the corresponding rhythm of many factors, including the grasp of the overall style of the story, the story changes direction, follow the story of the ups and downs, the effect of the expression of some special circumstances such as and so on. Of course, most important, respect the physics of the movement of things.This will be fixed in time and motion animation for the subject to grasp the rhythm, combined with my design work in the graduate practical experience in production, focusing on to talk about animation in a production process, its timing and rhythm of development which are subject to an objective and subjective factors, and on how a work has a vital role.