Vehicle detection equipment and a parameter adjusting method thereof, a medium and a detection system are provided; the vehicle detection equipment parameter adjusting method comprises the following steps: gathering and obtaining environment information surrounding the vehicle in real time; obtaining the position information of the vehicle in real time; determining target parameter values of the vehicle detection equipment according to the environment information surrounding the vehicle and the vehicle position information; adjusting the vehicle detection equipment parameters in real time according to the determined target parameter values. The method and equipment can flexibly adapt to various changeable road conditions, thus improving the detection accuracy of the vehicle detection equipment.