The vehicle portable data acquisition platform is built up by DH5902 hardened dynamic data acquisition system and the test data is timedomain analyzed and frequencydomain analyzed applying LabVIEW software aiming at the dynamic test problem of gun firing on the move. First of all, the parameters to be measured of gun firing on the move are analyzed and test project is built up. Then the test data saves in the DH5902 data acquisition device is import into the computer disk, the eliminating trend item program and filtering program are built up by LabVIEW software and the data is preprocessed. Lastly, the data is timedomain analyzed and frequencydomain analyzed, the vibration characteristics of the gun firing on the move is obtained. The analysis results could afford guidance for reliability design and adjustment and afford theory according for further firing on the move dynamic simulation.