Based on the Kelvin bridge resistance measurement circuit, the digital measurement is realizedcombing coaxial resistance , PASCO system, micro signal amplifier and other instruments. While avoiding thecomplicated adjustment steps , the measurement error caused by the temperature change due to long-timepowered resistance to be measured is reduced. Compared with the standard value , the measurement error of theresistivity and temperature coefficient of resistivity of copper is small, which indicates that the method isfeasible to reduce the error caused by temperature change in the measurement process.