Modern theater has a high requirement for acoustics, and the noise and vibration generated and transmitted by its equipment in the process of operation will affect the realization of the theater engineering function. Based on the detailed analysis of the source, transmission mode, transmission path, affected factors and consequences of the noise and vibration of the electromechanical system, this paper carries on the second deepening design of the electromechanical system, formulate the response plan of noise reduction and vibration reduction, optimizes the key links among them, and realizes the control of the noise and vibration of the electromechanical system.