Designed a CS5463-based double-current locomotive electricity meter. Introduced the system’s technical capabilities, the overall structure and program design method. Through the design of electric energy metering module, central processing module, dual power supply equipment and GPRS and RS485 communication module, realized the measurement of the electric locomotive AC and DC display, the communication with the TAX2 locomotive monitoring device and remote wireless meter reading function. The type test and routine test were conducted on the new developed meter with double-current system, the results show that the meter has the advantages of low manufacture cost, strong data processing, high security, high measuring accuracy, strong anti-interference ability etc.