The invention provides a folding type fishing cage. The cage comprises a frame cage body, wherein all the frame cage body is made of a spring steel; the outer side surface of the frame cage body is wrapped with a mesh wall; the four corners of the mesh wall are fixedly connected with a head net wire rope and a foot net wire rope and arranged on the frame cage body; the front-and-back opposite surfaces of the frame cage body are respectively provided with a fish inlet; the fish inlet is provided with steel-bar inverse tassels which are fixed by the mesh wall; one side of the top end of the frame cage body is respectively provided with a hanging rope nose and a fish-fetching door; one end of the fish-fetching door is connected with the mesh wall, and the other end of the fish-fetching door is connected with a hook, wherein the fish-fetching door can realize back-and-forth opening and closing under the action of the hook; and the bottom part of the frame cage body is provided with a bait bag which is fixed by a pulling rope of the bait bag.