The invention relates to an intelligent mobile cover plate used for a signboard in an orchard. The intelligent mobile cover plate includes a cover plate body used for covering dents in the signboard in the orchard, a hydraulic cylinder and an intelligent control system. The cover plate body is provided with four crank shafts and four rolling wheels, and a clamping piece is also arranged on the bottom surface of the cover plate body; the hydraulic cylinder includes a piston, a piston rod, a connecting rod, a cylinder and a cylinder cover, the piston is fixed to the connecting rod, the cylinderis in clearance fit with the outer wall of the piston, and an oil inlet communicated with the inner wall of the cylinder is formed in the outer wall of the cylinder; one end of the piston rod penetrates through the cylinder and then enters the cylinder to be fixedly connected with the connecting rod; a boss of the clamping piece is inserted into a groove to fixedly connect the cover plate body with the hydraulic rod. A distance measurement sensor in the intelligent control system obtains position information of motor vehicles or workers around the signboard, when it is detected that there arepotential dangers around the motor vehicles or the workers, an alarm rings the bell, and the controller drives the hydraulic cylinder to move. By using hydraulic transmission and intelligent control,the intelligent mobile cover plate has the advantages of being simple in structure, safe to use and stable in running.