Near-shore marine water quality and sediment sampling device

The utility model discloses a near-shore marine water quality and sediment sampling device. A connecting pipe placing cavity, a driving cavity, a drilling cavity, a sediment sampling cavity and a pushing cavity are formed in a device shell; an embedding plate is fixedly arranged on one side of the bottom of the sediment cavity, and an embedding groove is formed in the bottom of the embedding plate; a sampling block is arranged on the other side of the sediment cavity, a closing plate is integrally connected to the top of the sampling block, an embedding block is arranged on one side of the bottom of the sampling block, a hydraulic cylinder is fixedly arranged in the pushing cavity, a hydraulic cylinder push rod is fixedly connected to one side of the hydraulic cylinder, and the sampling block drives the hydraulic cylinder push rod to move through the hydraulic cylinder to move in the horizontal direction; a hydraulic driving device is fixedly arranged in the driving cavity; a drillingdevice and a drill rod ar