Ocean water quality survey sampler capable of displaying sampling depth

The invention discloses an ocean water quality survey sampler capable of displaying sampling depth. The ocean water quality survey sampler comprises a bearing base, moving guide wheels are rotationally arranged at the four corners of the bottom face of the bearing base through bearings. A separation baffle is fixedly mounted in the center of the interior of the hoisting box body; guide threaded rods are rotationally arranged on the left side and the right side of the interior of the bearing base through bearings. Wherein a guide sliding rail is fixedly mounted in the middle of the bottom surface of the bearing base; and a driving box body is fixedly mounted on the left side of the interior of the hoisting box body. According to the ocean water quality survey sampler capable of displaying the sampling depth, the stability of the hoisting box body in the sampling process is improved through the bearing base, seawater can be autonomously sampled and discharged through the water quality sampler arranged in the ho