This series of well flushing truck can finish well flushing and pressure testing with the adoption of chassis engine. It also can meet the requirement of displacement and pressure depending on the gear box of chassis. The suitable medium are clear water and crude oil. Based on the second class chassis, the well flushing truck without pressure is refitted by adding platform, diesel engine, clutch, mechanical transmission, quintuple cylinder plunger pump, water tank, high pressure manifold, suction piping, decompressor, lubrication system, operating system and so on. The truck is mainly used for well flushing of high pressure injection well. Based on the second-class chassis, the 350 well flushing truck is refitted by adding platform, full power PTO, triplex cylinder plunger pump, water tank, pump suction and discharge piping, wellbore pipelines, driving system, operating system and so on. The truck is mainly used for well flushing and testing. The optional parts are: overpressure protection device, engine timing device. Optional chassis: Beiben (4×2, 6×4, 6×6), Shanqi (4×2, 6×4, 6×6), Sinotruck (4×2, 6×4, 6×6), Dongfeng (4×2, 6×4, 6×6). testing. Optional parts: overpressure protection device, engine timing device. Optional chassis: Beiben (4×2, 6×4, 6×6), Shanqi (4×2, 6×4, 6×6), Sinotruck (4×2, 6×4, 6×6), Dongfeng (4×2, 6×4, 6×6).