The purpose of this thesis is to explore the application of passive vibration absorber for engineering. First, the two conventional dynamic vibration absorbers are reviewed. By deriving the equation of motion, the amplitude parameters of the forks robot were obtained, and they are natural frequency and spring constant. And by changing the parameters, the changing tendency of the main system response were then gained. System and then do simplify the Simulink software to simulate the vibration characteristics do, and seek to suppress vibration parameters during the simulation, expectations can quickly reduce the production line in the robot arm due to the high-speed vibration amplitude to improve the accuracy of product and shorten the waiting time in the process. Both results will then be studied and the differences between the results obtained will be further investigated.