The explosion-proof junction box is a kind of connection protection device with superior sealing performance used in the laying of explosion-proof electrical circuit. The supplier who uses the connecting column inside is used for the connection between the cable and the cable. The box body adopts the sealing technology to seal and protect the connection part of the supplier of the cable. It can be used as the branch connection of the control, lighting or power lines, and can also be used as the supplier of the fuel dispenser power supply Circuit use.