Provided is an IP protection insertion box. The IP protection insertion box comprises a pedestal (1), a plurality of insertion pieces (2) and a plurality of wire outlet boxes (3) corresponding to the insertion pieces (2). Each insertion piece (2) is inserted into the pedestal (1). The insertion piece (2) and the wire outlet box (3) are fixed through a screw and a sealing ring is added between the insertion piece (2) and the wire outlet box (3). The IP protection insertion box employs a box-type structure with independent insertion pieces. The heating elements of on the insertion pieces can be directly connected onto the side walls of the insertion pieces through heat conduction blocks. A fin is formed on the wall of each insertion piece, and can enhance the heat radiation capability of the device. The insertion box has a novel structure, and the heat radiation capability of the insertion box can be raised under a condition that the protection grade of the insertion box is ensured.