Based on MCU STM32F103ZET6 and fingerprint identification technology, a new type of control system for lockers is designed for checking service in supermarkets, shopping centers, bath centers and other public places. The system consists of STM32 MCU, fingerprint identification module, TFT LCD, four-way relay and electromagnetic lock. The application of fingerprint identification in the control system of lockers greatly improves the security of storage, widens the scope of use, avoids environmental pollution and material waste, and makes it more convenient for users to check in. The test results show that the system is stable, reliable and sensitive.