Sediment sample sampler

The utility model discloses a bottom mud sample sampler which comprises a sampling cylinder, a rotating rod is arranged in the sampling cylinder, a waterproof sealing ring is arranged at the contact position of the rotating rod and the top wall of the sampling cylinder, a rotating plate is installed on the rotating rod, one end, away from the rotating rod, of the rotating plate is in contact with the side wall of the sampling cylinder, and a fixing plate is installed on the inner side wall of the sampling cylinder. The end, away from the side wall of the sampling barrel, of the fixing plate extends to the rotating rod, a motor mounting frame is mounted at the end of the sampling barrel, a rotating motor is mounted in the motor mounting frame and used for driving the rotating rod to rotate, and the sampling barrel is provided with a hollow part. The sampling space in the sampling cylinder is closed and opened, the operation is simple, sludge at the bottoms of rivers and lakes can be conveniently collected, and