In the process of studying the dynamic calibration of the force sensor, it is found that the dynamic response performance of the sensor is obviously affected due to the non-rigid coupling between the force sensor and the base of the test device. Therefore, based on the existing dynamic calibration device of force sensor, the dynamic response performance and optimal mathematical model of force sensor are studied, and three optimized mathematical models based on the original model of force sensor are proposed. Then this paper analyzes and compares the three models through the experimental data, and finds that model 4 is the best of the three mathematical models. Finally, through 27 repeated impact tests and model 4, the characteristic parameters of the force sensor are calculated. These parameters are very important to improve the dynamic response ability of the force sensor.