Suction truck is a collection, transfer cleaning transport sludge, sewage, to avoid secondary pollution of the new sanitation vehicle, suction truck can be self-suction and self-discharge, fast working speed, large capacity, convenient transportation, suitable for the collection and transportation of feces, mud, crude oil and other liquid substances. Sewage suction car using domestic technology leading suction suction car vacuum pump, large suction, long suction range, especially suitable for sewage sludge suction, loading and discharge, especially can suck sewage mud, silt, stone, brick and other large objects.