The invention discloses a mine explosion-proof junction box. The mine explosion-proof junction box comprises a base and an upper cover; the base is provided with a conduit; a wiring unit is arranged in a wiring chamber; the wiring unit comprises a wire inlet side, a wire outlet side and a conducting strip; the wire inlet side and the wire outlet side are both provided with contact terminals; a guide rod and a screw are fixed to the upper cover; the conducting strip comprises an insulating substrate and a metal bar; the conduit comprises a wire leading tube, a reducing through hole on the wire leading tube, internal threads arranged at one end of the reducing through hole, a gasket, a pressing nut, a through hole on the gasket and a through hole on the pressing nut. The mine explosion-proof junction box is good in explosion-proof performance, can automatically cut off the circuit when the upper cover is separated, and is fast in the connection speed of cable lugs and good in the connection stability of the cable lugs.