Rotary pipe bicycle brake structure

The invention discloses a rotary pipe bicycle brake structure which comprises a bicycle handlebar. The surface of the bicycle handlebar is sleeved with a brake device. The brake device comprises a sleeve. The surface of the sleeve is sleeved with a rotary pipe. One end of the rotary pipe is fixedly connected with one end of a twining wheel. A through hole is formed in the end, away from the rotarypipe, of the twining wheel. A fixed shaft is inserted in the through hole. The end, away from the twining wheel, of the fixed shaft is fixedly connected with the groove bottom of a groove of a firstfixing block. A pull rope is twined round the surface of the twining wheel. The pull rope is arranged to pull a rotary rod to rotate, so that a brake block moves upwards to rub against a wheel, the wheel stops rotating, a brake effect is achieved, an elastic brake pad adopted in a traditional brake device is substituted, the problem that the brake performance is weakened due to elasticity weaknessafter the elastic brake pa