Disclosed is a ground connecting apparatus for a mobile terminal, in which grounds formed on the terminal are directly or indirectly connected so as to reduce an SAR value, thereby adjusting a connection length of the grounds. The ground connecting apparatus for a folder-type mobile terminal, which has a main body including a main body-side ground, a folder including a folder-side ground, a hinge unit and a hinge module, includes a hinge shaft connected to one end of the hinge module; a hinge contact means installed at a designated position on the first PCB so that the hinge contact means is connected to a first PCB-side ground connecting pad provided on the first PCB and adjusts an electrical connection length of the grounds; a pin connector installed at the other end of the hinge module; and a hinge connecting means installed at the pin connector so that the hinge connecting means is connected to a second PCB-side ground connecting pad provided on the second PCB and adjusts the electrical connection length of the grounds.