Abstract: In order to research stability and dynamic response of the guide bar,improve the inherent nature and mechanical properties of the guide bar shogging motion ,this research takes simplified analysis of the guide bar shog organization and establishes dynamic model, the dynamic differential equation is given according to the theory of Newton's laws of motion and do it by Laplace transform method, corresponding simulation model was developed based on the Matlab/Simulink analysis module. By taking actual measurement in points on the guide bar which adopting the test system for vibration constituted by the analytical system of acoustics and vibration, acceleration transducer and computer. Simulation was executed using the measured external incentives data of the guide bar, the simulation results of the vibration acceleration response curve are identified with the testing results，which verify the correctness of the model．

Key words: warp knitting machine, guide bar, shogging motion, vibration testing, dynamic model, MATLAB simulation