A sort of quality detection system based on DSP and VB for power circuit board drive was designed, which mainly aimed at the phenomenon of lower detection speed, complicated control circuit, lower level visualization for industrial sewing machine power circuit board. Two grades control mode is applied in the system, the top level is the PC and the lower is the detection equipment. The hardware design includes the DSP module, A/D module, signal processing module, serial communication module. The software design include main program, signal collecting program and serial communication program. The experimental results have proved that the detecting system can realize automatic detection and eliminate the error, which made by human and saved time as well as improved detection quality.