Commercial vehicle fairing optimal matching method and device and commercial vehicle

The invention belongs to the technical field, and particularly provides a commercial vehicle fairing optimal matching method and device and a commercial vehicle, and the method comprises the following steps: obtaining the specification and size of a container; pre-stored clamping position information of a multi-position support clamping groove is matched according to the obtained container specification and size; acquiring clamping position information of the successfully matched clamping grooves of the multi-position bracket; and adjusting the multi-position bracket connected with the flow guide cover, clamping a bolt for fastening the multi-position bracket at the clamping position of the matched clamping groove of the multi-position bracket, and tightening the bolt to complete the optimal position installation of the flow guide cover. The optimal installation position of the air guide sleeve is determined through the relative position relation of all the assemblies in the system. According to the invention