At present, the ship power system when a lot of pressure sensor, the stand or fall of its performance is directly related to the safety of the ship, and the pressure sensor temperature at work usually at about 200 °C. However, the dynamic calibration of pressure sensors by various metering institutions is generally carried out at room temperature, which cannot truly reflect the performance state of pressure sensors in actual use. ^[1] Therefore, in view of the above practical problems, this paper studies the pressure sensor high temperature dynamic calibration device, and adds a temperature control link to enable it to obtain the temperature response characteristics of the pressure sensor. At the same time, it can simulate the calibration environment under the actual working state of the pressure sensor, so as to achieve the high temperature dynamic calibration of the pressure sensor.^[2]