Marine bedrock coring sampler

The utility model discloses a marine bedrock coring sampler. Wherein the outer barrel string is composed of an outer barrel and a coring drill bit in sequence, and the inner barrel string is arrangedin the outer barrel string and composed of a fishing head, a fishing head base, a water distribution upper connector, a suspension ring, a water distribution lower connector, a suspension bearing device, a coring inner barrel and a necking sleeve. The coring device is characterized in that the outer barrel string further comprises an elastic clamping blocking head, an elastic clamping chamber connector and a suspension connector; the inner barrel string further comprises an elastic clamping device connected between the fishing head base and the water distribution upper connector. And the outerbarrel string and the inner barrel string are connected and matched through a bearing ring and a hanging ring. By applying the tool provided by the utility model, continuous bedrock coring operationcan be carried out on a mar