Drainage structure of aquatic nursery pond

The utility model discloses an aquatic nursery pond drainage structure, which relates to the technical field of aquatic products and comprises a drainage tank and filter screens, through holes are arranged on two sides of the drainage tank, two groups of sliding grooves are arranged on the inner bottom wall of each through hole, two groups of placing cavities are arranged on the inner side wall of each through hole, and two groups of filter screens are slidably arranged on the upper surfaces of the sliding grooves. Positioning holes are correspondingly formed in the edges of the two ends of the side, close to the middle, of the outer surface of the filter screen on one side, clamping grooves are correspondingly formed in the positions, close to the edges, of the two ends of the inner side wall of the filter screen on one side, and mortise and tenon joint parts are correspondingly arranged on the edges of the two ends of the inner side wall of the filter screen on the other side; the aquatic nursery pond filte