The safety detection is one of the key procedures in production of car seats and it is also the quality guarantee of car seats. Safety detection items of QBC car seats include the supplemental inflatable restraint system resistance, passenger presence and safety belt power detection. The detection device adopts the passenger presence detection sensor, digital source meter, data acquisition card detect and collection information. The industrial control computer is applied to process information, judge the results. Finally the detection results are saved into the production database in the enterprise server by internet. The application shows that the detection device has high reliability, high automation level and secured data storage mode.