Abstract: In view of problems that weighting signal and speed signal of mine-used electronic belt scale has slower speed of signal acquisition and data processing and lower accuracy of data sampling, a design scheme of signal acquisition system of mine-used electronic belt scale based on FPGA was proposed. The system is built with FPGA as control core. In the system, the weighing signal is processed by A/D conversion and digital filtering and the pulse signal of speed is collected and processed. The processed data is transferred to electronic belt scale through RS485 bus. The testing result shows that the system has high speed of signal acquisition and data processing, high precision and strong anti-jamming capability.