The invention relates to an automobile train flow guiding cover capable of being electrically adjusted in full height. The automobile train flow guiding cover comprises a flow guiding cover top surface, side cord fabric, a spring roller shutter structure, a locking mechanism, a lifting device, a relative position measuring sensor and a control system. The front end of the flow guiding cover top surface is hinged to the top of a cab through a bracket, and the relative position measuring sensor is installed at the back end of the flow guiding cover top surface. The upper end of the side cord fabric is hinged to the flow guiding cover top surface through a rivet, and the lower end of the side cord fabric is connected with the spring roller shutter structure. The spring roller shutter structure is fixedly connected to the top of the cab. The two ends of the lifting device are hinged to the back end of the flow guiding cover top surface and the back wall of the cab correspondingly. A lifting position sensor is installed on the lifting device. The relative position measuring sensor, the lifting position sensor and the lifting device are connected with the control system. Relative size parameter identification of a finished automobile train and electrically adjusting of the height of the flow guiding cover are achieved through control of mobile communication equipment, so that the automobile train conveniently gets in and out of a warehouse, and resistance reduction and consumption reduction are maximized.