Foldable fish and shrimp cage

The utility model provides a foldable fish and shrimp cage. The fish and shrimp cage comprises four side edge rings, wherein net weaving is carried out on the peripheries of the four side edge rings so that a halving-folding body can be formed, the top and the bottom of the body are connected with corresponding woven nets respectively, one pulling rope is led from the top of each side edge ring to the middle, the pulling ropes are knotted to form a pull rope, a fish guiding channel with the outer part large and the inner part small is formed in the center of each side edge ring, the inner opening of each fish guiding channel is triangular, adjacent bottom angles of the triangles of the inner openings of the four fish guiding channels are connected and positioned through connecting ropes, a fish blocking sheet matched with the corresponding inner opening in shape is hinged to the top angle of the triangle of the inner opening of each fish guiding channel, every two adjacent fish blocking sheets are connected t