The utility model relates to a pressure sensor tester, including constitutions such as handlance, manometer, high pressure line, welding swivel nut and guard shields, can test the operation to pressure sensor is whether in proper working order, no longer need adorn the derrick riser with the sensor, the construction process and the personnel that have avoided adopting the slush pump to follow ring testing and increase hurt the risk, effectively improve the efficiency that pressure sensor tested, reduction staff's intensity of labour and danger, easy operation, safe and reliable, can test before pressure sensor leaves warehouse, guarantee the pressure sensor's that leaves warehouse integrity, greatly reduced because wireless instrument trouble that pressure sensor led to the fact. This tester is lightly convenient, and on -the -spot application of being convenient for does not relate to the electron of MWD instrument own and mechanical structure and change, and the process is simple, and low cost can further reduce the risk cost of test pressure sensor and the additional cost who adopts the slush pump circulation to cause, can be extensive in the drilling site popularization, application scope is big.