The invention provides a shielding cover, a mainboard module, and terminal equipment. The mainboard module comprises a mainboard body and a coaxial line. The shielding cover comprises a shielding cover body which is disposed on the mainboard body; at least one wire-passing part, wherein one end of the wire-passing part is disposed on a side wall of the shielding cover body. The bottom wall of the wire-passing part is connected with the mainboard body, and the coaxial line is enabled to be clamped in the wire-passing part or in a groove between the wire-passing part and the shielding cover body, so there is no need of a paster wire clamp for clamping the coaxial line in the mainboard module during arrangement, thereby effectively reducing the cost of the shielding cover. The coaxial line is clamped in the wire-passing part or in the groove between the wire-passing part and the shielding cover body, thereby enabling the coaxial to be close to the side wall of the shielding cover body as much as possible during setting, enabling the line arrangement in the mainboard module to be simple and beautiful, facilitating the disassembly of other parts, guaranteeing that the coaxial line is not liable to be extruded by other parts, and prolonging the service life of the coaxial line.