The utility model relates to a bridge cut -off device for police dog training, include: the pontic that two sets of intervals symmetry set up, every pontic include support, bridge floor and footboard,and the support is fixed on subaerial support top and is equipped with the bridge floor that the level was placed, and the front end slidable mounting of bridge floor has inner cleadings, and the end-to -end connection of bridge floor has the footboard that sets up with the ground slope, is equipped with at the back of bridge floor and makes the gliding pull rod in inner cleadings front and back, and the footboard back and support are fixed, are equipped with transparent protective plate at two bridge floor interval region, and the transparent protective plate mounted position is less than the bridge floor. According to police dog's the size and the power of ability, design into retractable structure with the bridge floor, make the training accomplish to teach students in accordance withtheir aptitude, can treat to increase the section distance again after the police dog ability promotes, realize from the easier to the more advanced, through setting up transparent protective plate,make police dog can't see transparent protective plate in addition, prevent to lead to police dog jump ability to descend because of the existence of protection shield, produce psychology and rely on,prevent still that police dog from falling production tumble injury, influence police dog training process.