Pavement repairing grouting device

The utility model relates to the technical field of road surface grouting, in particular to a road surface repairing grouting device which can effectively prevent waterproof agents from flowing out of holes so as to reduce waste of the waterproof agents and comprises a grouting nail, a connector is arranged at the top end of the grouting nail, a baffle is arranged in the middle of the grouting nail, and a first screwing block is arranged at the top end of the baffle. A sealing strip is arranged at the bottom end of the baffle, a fixed block is arranged at the bottom of the grouting nail, a movable block is installed at the bottom end of the grouting nail, a sealing block is arranged between the movable block and the fixed block, a second screwing block is arranged at the top of the grouting nail, external threads are arranged on the outer wall of the middle of the grouting nail, and internal threads are arranged in the middle of the baffle. The baffle is in threaded connection with the grouting nail, the mova