Deepwater sediment sampling instrument

The utility model relates to the technical field of river regulation sediment sampling, and discloses a deepwater sediment sampling instrument which comprises a fixing plate, an auxiliary sampling mechanism is arranged at the bottom of the fixing plate, and an operation rope is fixedly mounted at the top of the fixing plate; the auxiliary sampling mechanism comprises two shells, the tops of the shells are fixedly mounted at the bottom of the fixed plate, first waterproof motors are fixed to the inner walls of the shells through bolts, threaded rods are fixedly mounted at the output ends of the first waterproof motors, and threaded sleeves are in threaded connection with the surfaces of the threaded rods; and a connecting rod is fixedly mounted on one side of the threaded sleeve. According to the deepwater sediment sampling instrument, by arranging the auxiliary sampling mechanism, the purpose of convenient sampling can be achieved, a user can sample sediment more conveniently, meanwhile, it can be guaranteed