Poultry breeding cage

The invention provides a poultry breeding cage. The poultry breeding cage comprises a plurality of vertical frames, a bottom net and a cross beam assembly, wherein the vertical frames are vertically arranged, the cross beam assembly comprises a plurality of cross beams, and two ends of each cross beam are fixedly connected with the corresponding vertical frames respectively; a longitudinal supporting assembly is arranged between any two adjacent cross beams of the cross beam assembly and comprises a bracket, a first supporting plate body of the bracket is connected with the upper end of a second supporting plate body, an included angle is formed by the first supporting plate body and the second supporting plate body, the connection position of the first supporting plate body and the secondsupporting plate body abuts against the lower end face of the corresponding bottom net, and two ends of the first fixing plate body and two ends of the second fixing plate body are separately fixed to the two adjacent cross