Dynamic pressure testing is more and more widely used in the industrial field, and reliable calibration technology is the guarantee of accurate dynamic pressure value. Traceability has always been the bottleneck of the development of dynamic pressure calibration technology. This paper takes the traceable dynamic pressure measurement method based on laser interference as the research object. According to the characteristics of liquid pulse pressure, a measurement model based on Newton's second law is established, and the errors caused by various influencing factors are analyzed and tested. Through the calibration test of pressure sensor, the feasibility verification of laser interference measurement and the analysis of measurement uncertainty are completed, and the pulse pressure calibration is realized Reliable traceability.