In this research, LabVIEW 8.5 is taken as the software platform. Sensors, data acquisition cards are combined as its hardware. A detecting and analyzing system for the vibration comfort of car seats is developed, in which the functions as to the collecting and processing of vibrating signals, the access of data and the display of images are achieved. The system can also analyze the dynamic characteristics and the comfort of the occupant-seat system. By choosing different seat characteristics according to different vehicle environments, the best comfort can be obtained. In addition, it also provides some favorable references to the designing of safe and comfortable automobile seats.