Compared with the traditional detection instruments, the test system of the paper has obvious advantages such as easy to carry and easy to modify. It is based on the LabVIEW software and hardware card with sensor, data acquisition card, data maintaining. The paper completes the realtime auto speed, maximum speed, 100 kilometers acceleration time and braking distance analysis and display, the automobile dynamic performance test system is established. After repeated tests, the system performance is stable, and can timely and accurately response test results, and it has high application value.