To improve the automation level of bullet management, a novel bullet counting system based on UV electro-optical technology is designed. The system is composed of the upper PC, main node and three counting nodes. In the counting node, UV radiation of bullet flame is detected by ‘solar blind’ UV detector. Probability of false alarm of the system is low because background radiation of UV is very weak. Bullet signal is converted to digital signal and counted by STM32, a MCU with low power cost. Counting nodes can be extended easily because they have same the structures. Different from counting nodes, main node has a USART interface to communicate with PC. Main node and counting nodes are connected with CAN bus. The bullet counting system based on UV detection technology can detect bursts of bullets. It’s a novel, reliable and accurate method and works well at shooting ranges.