Embodiments of the invention disclose a cage system. One connection hole is formed in parts with the same height, close to the top of a cage, of a first side surface and a second side surface which are opposite to each other of a cage respectively; a first brake is arranged at one side, facing the interior of the cage, of the connection hole in the first side surface, or is arranged at one side, facing the interior of the cage, of the connection hole in the second side surface; one transverse connection shaft is arranged at each of two end points of a U-shaped cage connection frame and is axially connected with the connection hole of the first side surface and the connection hole of the second side surface from the outside of the cage, wherein, one transverse connection shaft of the cage connection frame penetrates through the connection hole connected with the first brake and is connected with the first brake; the first brake provides certain friction damping for the transverse connection shaft with the first brake. The friction damping provided by the first brake can prevent the condition that the cage axially shakes back and forth under wind and inertia effect, thereby improving the safety of the cage system.