The utility model discloses a steel pipe pole intermediate flange junction water repellent structure, including last pipe fitting, lower pipe fitting, it is provided with flange to go up the pipe fitting lower extreme, it is provided with to go up the pipe fitting below lower pipe fitting, the pipe fitting upper end is provided with down flange down, go up the pipe fitting with be provided with the strengthening rib down on the pipe fitting outer wall, go up flange with be provided with the sealing washer down between the flange, down flange with it passes through to go up flange connecting bolt is together fixed, be provided with down the steel arch that blocks water on the pipe fitting inner wall, the steel block water protruding with it is provided with the soft membrane that blocks water to go up between the pipe fitting inner wall. Beneficial effect lies in: can realize steel pipe pole internal waterproof, slow down or eliminate because of the extraneous water gets into the insidecorruption that leads to the steel pipe pole inner wall of steel pipe pole that the life, the reduction that increase the steel pipe pole lead to steel pipe pole safety in utilization problem becauseof the inner wall corrodes.