To provide a hinge of a box body for housing electric equipment, which enables an anti-coming-off member for a hinge pin to be easily attached to/detached from the box body without the need for a tool in the attachment/detachment of the anti-coming-off member.

In this hinge 4 of the box body 1 for housing the electric equipment, the hinge pin 7 is inserted through a box body-side hinge 5, which is provided on the opening frame 2a of the box body 2, and a door body-side hinge 6, which is provided on a door body 3 in such a manner as to face the box body-side hinge 5, from the side of one end, while the other end of the hinge pin 7 abuts on the anti-coming-off member 8 detachably attached to the opening frame 2a of the box body 2. Thus, the hinge pin is prevented from coming off.