The invention relates to a cage for entrapping naked carps. The cage comprises four reinforcing bar rings which are fixedly and mutually connected through a steel mesh rope, wherein the lateral surfaces of the four reinforcing bar rings which are fixedly connected through the steel mesh rope are wrapped with a mesh; the mesh continuously extends to a position above a pull rope of a fish taking opening to form a cage body; mesh leading walls are connected to two sides of each reinforcing bar ring at the front end of the cage body, are connected vertically through a steel mesh rope and are fixed through mesh leading wall piles; a fish inlet and a fish inlet of a fish storing warehouse are formed in an opening part at the front ends of the reinforcing bar rings and an inner cavity in the cage body; fish inlet inverted whiskers are mounted at the fish inlet and the fish inlet of the fish storing warehouse respectively, and extend inwards to be connected with a fish inlet inverted whisker opening; the fish inlet inverted whisker opening is fixed through a pull rope of the fish inlet inverted whisker opening.