Pavement repairing protection device for highway engineering

The utility model discloses a pavement patching protection device for highway engineering, which comprises a first baffle plate, the inner side of the first baffle plate is slidably connected with a second baffle plate, one end of the first baffle plate and one end of the second baffle plate are both fixedly connected with a fixed seat, and the inner side of the fixed seat is slidably connected with a movable frame. A screw rod is slidably connected to the inner side of the movable frame, a clamping plate is rotatably connected to the bottom end of the screw rod, and the first baffle and the second baffle can be fixed to the periphery of the sewer cover under the interaction of the clamping plate and the movable frame, so that the first baffle and the second baffle surround the periphery of the sewer cover; the asphalt is blocked by the first baffle and the second baffle, so that the asphalt cannot enter the inner side of a water leakage groove of the sewer cover and cannot enter a sewer through the sewer cov