The working condition of the pitotstatic system affects flight safety of aircraft. In order to make the trainees more intuitively master working principle and work form of the pitotstatic system, a set of pitotstatic test system was developed.The test system could simulate the influence of the static tube and the pitot on the air data computer, such as gas leakage, blocking, pitot pressure and static pressure mixing under the supercharging and nonpressurization conditions. The required components were listed from the schematic diagram, the working principles of each component were understood.The software and hardware were designed and constructed.The gap between the actual value and the theoretical value was recorded and the reliability of the test system was verified. At the same time,the causes of the fault were found out and some improvement measures were put forward.