Abstract: Firstly, the purpose, technical key and the content of researching the space docking dynamics, and the method and steps for establishing docking dynamics model are described in brief. Then, according to the dockingmechanism system of androgynous and peripheral type, the DODASS simulation program developed by the docking dynamics model and its engineering application simulation curves areintroduced emphatically. finally, a preliminary conclusion providing a reference for engineering design is given.