The multi-tube sampler is the bottom sediment sampling equipment, which has the function of buffer static pressure penetration into the sediment after the bottom station, and adopts the adsorption upper seal and insertion lower seal structure. 8 tube samples can be obtained in one sampling, including the original sample of undisturbed sediment and overlying water of unexchanged sediment. Multi-pipe sediment samples can meet the needs of environmental research such as geomechanical property measurement of seabed sediments, Marine engineering geology, biological, chemical and ecological changes, etc., and they are the necessary equipment for Marine and estuary estuary sediment survey and research.