The invention discloses a self-service-eating pet cage. The self-service-eating pet cage comprises a pet cage body, groove holes are formed in the side wall of the pet cage body, eating box bodies arearranged in the groove holes and fixedly arranged in the groove holes of the pet cage body through fixing frames, the upper portions of the front sides of the eating box bodies are each provided withan opening, cover plates turning over towards the insides of the eating box bodies are arranged at the tops of the openings, the area of the cover plates is larger than the area of the openings, theback sides of the eating box bodies are each provided with a feeding opening, each sealing plate is correspondingly arranged on the feeding opening, and the area of the sealing plates is larger than the area of the feeding openings. According to the self-service-eating pet cage, the structure is simple, using is convenient, placement of foods is rapidly completed, pets conveniently eat the foods,and the selectivity is high.