To provide a shielding device having a simple arrangement, which can increase an inspection efficiency of characteristics of an electrical device or the like.

A shielding device 100 includes a main body 110 having an opening 111 formed therein and an electrical device accommodated therein, a lid 120 for opening or closing the opening, a connection means 130 mounted to the main body for connecting the electrical device and an inspection device, an open/close restricting means 140 mounted to the main body for restricting the opening and closing of the lid, and an opening operation manipulation means 150 connected to the inspection device for actuating opening operation of the open/close restricting means according to an inspection end signal from the inspection device.