Aiming at the problems of huge parameters to be tested, complex instrument setting, shrinking package size, low efficiency and reliability of the conventional manual measurement for SAW filter, a domestic customized automatic test machine is used to implement an automatic test system for SAW filters in surface mount devices (SMD) based on LabVIEW software. The results show that the test system can automatically load, test and record the data of SMD, and automatically separate the unqualified products. The test speed is about 1 000 pieces/h, which meets the needs of R & D and small batch production.