In this thesis, the author first analyzed the topological structure of the original mechanism. On this basis, the topological map and a series of kinematic chain maps which meet the requirements have been constructed with graph theory. Then the types of various components were designated based on specific design constraints, and generalized kinematic chains were turned into the new mechanism having the same or similar function with the original mechanism. Designers can value them comprehensively and screen out the good structural type. The method is regarded as a workable and efficient method for development and design of new products.