The monopole tower includes a tower body and a working platform connected to the upper part of the tower body. A lower door hole is provided in the pole wall at the bottom of the tower body, an upper door hole is provided in the tube wall where the working platform is located, and an antenna bracket is fixed on the fence of the working platform. The tower body is connected with a ladder consisting of a ladder main rod and a horizontal bar connected to the ladder main rod, the ladder main rod is fixedly connected to the support frame, and the support frame is screwed with a connecting bracket arranged on the inner wall of the tower body.