Abstract: Puts forward a new mode-mechatronics design method in the study of a robot 's kinematics, dynamics and mechanics of machinery. It puts together the structural parameters (calculable or uncalculable) kinematic parameters with the generalized forces (inertia force, spring force, damping force). The uncalculable parameters are estimated with the vibration model analysis method. A simulation software package is worked out. The design parameters of the driving devices-executing devices are calculated from a system viewpoint, matching the mechanical parameters optimally with the electronic parameters. An example of analysis and design of the JZF-Special Purpose Assembly Robot developed by the Robot Research Center BIT has proved the method feasible.