In order to measure and analyze the dynamic plantar pressure change during the athlete's motion process, then optimize the training mode and avoid sports injury, a new wearable dynamic plantar pressure measurement system is developed in this paper. The piezoelectric electret film (EMFi) is used as the sensing material to collect the pressure signals of the 16 points on the foot. The original charge signal is collected by the highspeed analog switch, the charge amplifier circuit, the lowpass filter amplifying circuit, the power frequency filter circuit, and the STM32F4 internal A/D acquisition, finally is transmitted to PC by 2.4 GHz wireless. The experimental results show that the test results of this system are consistent with the variation trend of normal human gait, and have good dynamic response and reliability, which provides a theoretical basis for the attitude correction of athlete.