The utility model provides an auxiliary device of overhead bridge affiliated facilities sunshade installation, belongs to overhead bridge construction practice field, can solve the bad news power thatexists at overhead bridge affiliated facilities sunshade construction and installation, consuming time and unsafe problem, including automobile body and connecting device, the one end of automobile body is equipped with the counter weight, and the automobile body was equipped with the liftable for the other end that is equipped with the counter weight truss is located the bottom of truss with touching induction system, touching induction system, is equipped with dog and baffle on the truss, and the bottom of truss free end is equipped with infrared detection device, connecting device is including connecting rope, fixed pulley and coupling hook, and the fixed pulley is located between dog and the baffle, connects the one end and the car connection of rope, and the other end passes the dog,is connected with the coupling hook after walking around the fixed pulley. The utility model discloses save operating time, reduced the human cost, improved work efficiency.