The utility model discloses a motorcycle body side cover mounting structure and a motorcycle. The motorcycle body side cover mounting structure comprises a motorcycle body side cover and a wind shield. The motorcycle body side cover is provided with a first connecting hole used for being connected with the wind shield. The wind shield is provided with a second connecting hole which is correspondingly connected with the first connecting hole. The wind shield is also provided with a locating block. The motorcycle body side cover is further provided with a locating groove matched with the locating block and used for embedment of the locating block so as to limit the motorcycle body side cover and the wind shield. The motorcycle body side cover and the wind shield are located through the locating block and the locating groove. The locating block and the locating groove serve as an independent locating structure, are easy to produce and machine, facilitate control over fit clearance and can effectively improve installation and locating of the motorcycle body side cover and the wind shield, so the motorcycle body side cover and the wind shield can be connected firmly and reliably. Meanwhile, since the connecting holes are no longer accuracy control datum and are merely used for connection and fixation, the requirement for machining accuracy of the connecting holes is reduced beneficially, and the production and machining efficiency is improved.