A side grounded structure for combined battery lid of mobile communication terminal is provided, which comprises a metallic battery lid, and there is a plastic layer set in the metallic battery lid, and a spring contact slice is set between the metallic battery lid and the plastic layer, the spring contact slice is connected to the metallic battery lid and has a curve contact section used to connect the grounded down-lead of the circuit board. By adopting the combined structure of battery lid and equipping the spring contact slice in the battery lid, the side grounded structure for combined battery lid of mobile communication terminal in present invention conveniently realizes the ground contact, assures the efficiency of the contact, enables the convenient production, improves the product yield and reduces consumption and cost in manufacture.