Anti-coiling wire structures and moored balloons with the same

A moored balloon includes a balloon, a wire coupled to the balloon, an antenna, a cable coupled to the balloon, a rotating device hung below the balloon, and a fixing device. The rotating device comprises a rotating unit and a bracket. The rotating unit comprises a bearing seat mounted on the bracket, a bearing unit mounted on the bearing seat, and a shaft passing through the bearing unit and coupled to the balloon. The fixing device comprises a receiving tube for receiving the antenna. The receiving tube is located on the bracket. The shaft moves with the balloon to generate a twisting force, the bearing unit counterbalances the twisting force to prevent the cable being twisted with the wires.