Abstract: The geophone tester is not easy to carry, the power consumption is big, the work is not stable, the anti-jamming ability is weak and the storage capacity is small, a portable geophone tester based on STM32 single chip is designed. The device uses the STM32 microcontroller as the master core, collects the response data of the geophone from the high-precision 24 bit AD acquisition chip, stores the data to the 16 GB TF card after digital filtering, and tests the sensitivity, natural frequency and damping coefficient of the geophone according to the geophone parameter calculation, so as to determine whether the geophone is working properly. The experimental results show that the tester is portable, stable, low power consumption, large storage capacity, strong anti-interference ability, and can test the geophone accurately in the environment with mechanical vibration interference.