Large-water-surface fishery resource enhancement and release device

The large-water-surface fishery resource enhancement and release device comprises a main body, a plurality of storage cavities with openings in the upper ends are sequentially formed in the upper end of the main body from left to right, an openable cover body is arranged at the opening end of each storage cavity, a release box with an opening in the upper end is arranged in each storage cavity, and lifting lugs are arranged on the release boxes; a water pump is arranged outside the main body, a water inlet of the water pump is communicated with a water inlet pipe, a water outlet of the water pump is communicated with water outlet pipes, the water outlet pipes are communicated with the rear ends of the storage cavities one by one, the front ends of the storage cavities are communicated with drainage pipes, and first water valves are arranged on the drainage pipes. A water passing channel is formed between the main body and the releasing box, over-temperature operation can be carried out on fishes in the transp