Bicycle hand (hold) variable speed adjusting device

The utility model discloses a bicycle hand (hold) variable speed adjusting device, including box, pedal spindle, output shaft, the pedal spindle both ends are extended the box and are turned to the complex mode with the circumferencial direction and are provided on the box, install a driving gear on the pedal spindle, less little driving gear and the great big initiative gear of diameter of diameter that the driving gear is in the same place by the rigid coupling, install great big driven gear of a diameter and the less little driven gear of a diameter on the output shaft, the output shaft both ends turn to the complex mode with the circumferencial direction and are provided on the box, and one end is passed the box and is connected with the chain dish, be equipped with the shift fork device on the driving gear, the shift fork device other end is connected with drive arrangement mutually, and drive arrangement passes through shift fork device drive driving gear shaft and moves little driving gear of messenger and big driven gear meshing left or move the big driving gear of messenger right and the meshing of little driven gear. The utility model discloses simple structure, the cost of manufacture is low, can realize that the bicycle accelerates and be laborsaving.