Abstract: Objective: Accurate measurement of traction system signals is the data source for controlling, monitoring, fault analysis, and handling of the entire HSM (highspeed maglev) system, and it is also the basis for subsequent indepth analysis and research on HSM system. It is of great significance to explore the design and application of a new measurement device for HSM train traction system.Method: The basic composition of Shanghai HSM traction system is briefly introduced. To facilitate debugging and fault analysis, various inputs and outputs of the traction system and control signals need to be collected, a new measurement device is designed and built according to the actual measurement requirements.Results & Conclusion: Compared with the conventional current collection method, the device integrates the measurement resistor into the current module, which reduces the volume while improving measurement accuracy. Through analysis of the collected signals, the new measurement device can calculate technical indicators such as voltage, current, traction power, energy consumption of the HSM system, and it can also be used for data analysis of fault states.