Abstract: In this paper, the coal mine intrinsic safety transducer is taken as the research object and surge immunity test is simulated using ADS simulation software. In view of the phenomenon that the transducer would be rebooted caused by reverse voltage notch of the transducer power port when forward surge immunity is exerted, the influence of various parameters in the model on the reverse voltage notch was discussed through the parameter sweep analysis. The simulation results show that the four equivalent models of transducer have no effect on the simulation waveform. However, the TVS would accelerate the generation of the notch. And the internal resistance of power supply equipment which is used as the auxiliary device in the test has great effect on the waveform of the terminal voltage. The inductor and the diode placed on the front end of the TVS have a certain improvement on reverse voltage notch.