Totally closed shallow layer coring tool

The utility model belongs to the petroleum geology drilling equipment field especially relates to a totally closed shallow layer coring tool, including top connection, short circuit, urceolus, drill bit, inner tube and core gripper, still include piston, suspension bearing subassembly, cut the core ball and get the core ball, piston, suspension bearing subassembly, inner tube and core gripper be in get that core tool housing is inside to loop through screw thread fixed connection from top to bottom, wherein, the upper end of piston be provided with with the sealed face of core ball complex that cuts, the side of piston is through pin and top connection fixed connection, the structure of suspension bearing subassembly include the connector, press cap A, down the connector, press cap B and bearing, wherein, go up the connector with hinge joint. The side of last connector is provided with the liquid hole excessively that supplies the drilling fluid to pass through. The utility model discloses a special soft form