The utility model relates to a mud -rock flow protective equipment technical field discloses an arrange and lead device for mountain area mud -rock flow, and it includes high pressure water tank roll break bar about with, high pressure water tank top be equipped with T type protective housing, T type protective housing below both sides be equipped with a plurality of apopores, the delivery port inside be equipped with high penstock, the nearly entrance to a cave in slag field escape canal both sides end be equipped with the roll break bar respectively, roll break bar top all be equipped with the safety cover, the roll break bar under all be equipped with the cutting plate, the horizontal inboard direction of roll break bar all is equipped with the cable wire filter screen about, the horizontal inboard direction of cable wire filter screen all be equipped with the spring stop, the spring stop under all be equipped with waste material collecting groove. The device simple structure, convenient to use can effectively avoid the siltation blocking phenomenon of solidss such as mud, piece stone, trees on the slag field in the mud -rock flow, guarantees the safety in relevant building, personnel and river course of low reaches.