Layered sampler for marine plankton survey

The invention discloses a marine plankton survey stratified sampler, which comprises a working plate and a collection box, and the upper surface of the working plate is fixedly provided with a sampling device; the connecting column is connected with the output end of an external lifting device, and a fixing plate is connected to the interior of the working plate in a clamped mode; the device further comprises a transverse rod, the transverse rod is fixedly installed on the inner wall of the collecting box, and the other side of the transverse rod is fixedly connected with the surface of the vertical plate. According to the stratified sampler for marine plankton investigation, when a fixing plate and a collecting box are installed, the collecting box and the fixing plate are inserted into a working plate, after the lower surface of the fixing plate makes contact with the upper surface of the working plate, a clamping block and a clamping groove are in the same horizontal direction, and at the moment, the clamp