The invention belongs to the technical field of design and development, and manufacturing of fishing equipment of the fishing industry and in particular relates to a self-unloading type fish collection device. The self-unloading type fish collection device comprises three parts from inside to outside: a fish collection basket, a barrel-shaped hoisting frame and a protective cover, wherein the protective cover is of a barrel-shaped structure with upper and lower openings; a slide groove is formed in a side wall; a channel gate and a limiting block, which is matched with the slide groove, are arranged on the side wall of the barrel-shaped hoisting frame; a hoisting lifting rod is arranged at the top of the barrel-shaped hoisting frame; a rotary shaft mounting hole is formed in the bottom of the side wall of the barrel-shaped hoisting frame; the whole body of the fish collection basket is a sphere-like shape and is provided with a shell body; a counter weight block is arranged at the edge of one side of the upper part of the fish collection basket; a hollow inner floating tank is arranged in the fish collection basket and at the same side of the counter weight block; the upper surface of the inner floating tank is horizontally arranged; the fish collection basket is further provided with a fish collection basket rotary shaft mounting hole adaptive to the rotary shaft mounting hole. With the adoption of the device, the working strength of workers can be alleviated, and fished aquatic products can be completely self-unloaded, so that the fishing efficiency is improved.