Abstract: Good performance of fixture used for battery can avoid the phenomenon of over-test or under-test in battery vibration test, so that the quality of the test is ensured. Based on the functions and types of vibration test fixture, the technical characteristics and requirements of the fixture are analyzed. From 4 aspects of natural frequency and resonance frequency, attenuation coefficient and relative damping coefficient, modal test analysis and vibration bench measurement, test and verification methods for the fixture are discussed and analyzed. Through finite element simulation calculation and vibration bench test, the fixture used for rail transit train battery vibration test is tested, and the function characteristics of the fixture are verified. The modal frequency obtained by simulation analysis is close to that obtained by experiment, which verifies the correctness of finite element analysis.