The utility model discloses a steel box girder flange plate and side web plate coating hanging bracket which comprises a coating hanging bracket body, the coating hanging bracket body comprises supporting beams which are symmetrically arranged, connecting pieces are transversely and symmetrically arranged on one sides of the tops of the two supporting beams, and a fixing piece is arranged at one end of each connecting piece; Limiting pieces are symmetrically arranged at the other end of the connecting piece and are vertically arranged at the top of one side of the connecting piece; An operating table is arranged in the middle of one side of each of the two supporting beams, a plurality of guard bars are arranged above the operating table, the guard bars are semicircular or C-shaped, a first pedal is arranged on the lower portion of the other side of each of the two supporting beams, a second pedal is arranged below the first pedal, and the second pedal is of a frame structure. The hanging bracket can provide enough operation space for anti-corrosion and anti-rust coating of different positions of flange plates and side webs, is safe and reliable, enables workers to carry out construction work safely, can be recycled, saves resources, and meets the requirements of national green construction.