The utility model discloses a special Z type ground cage of police dog training belongs to police dog training apparatus technical field. Seal up and no angle in order to solve present ground cage, and length is uncontrollable problem. The utility model discloses a special Z type ground cage of police dog training, including end plate and ground cage barrel, the both ends welding of ground cage barrel has the end plate, ground cage barrel is the zigzag structure, it has the cambered surface window to open on the lateral wall of ground cage barrel, ground cage barrel is hollow structure, be equipped with the sliding closure in the hollow structure, be equipped with the slide on the inner wall of ground cage barrel, toughened glass is located cambered surface window department, it bumps thepearl to be equipped with the spring in the both sides of sliding closure top, be equipped with on the lateral wall of cambered surface window and bump the pearl screens, the spring bumps pearl and the corresponding pearl screens looks block that bumps, left end plate is equipped with a plurality of protruding positions, the end plate on right side is equipped with a plurality of concave positions. Can increase ground cage length at any time according to the demand to it improves the challenge to increase the angle, the improvement and the motion capability training that have realized the police dog psychological quality from the easier to the more advanced, progressive the training effect.