Bicycle driver

The utility model provides a bicycle driver, it is main includes frame (3), gearbox (18), install at the epaxial drive rear wheel (15) of gearbox output, install freewheel clutch (37) on transmission input shaft and install the drive arrangement on frame (3), its characterized in that of: drive arrangement still including setting up link drive spare (10) that are used for connecting drive connecting rod (7), and frame (3) of every running-board (1) and the both sides between gearbox (18) all respectively the installation have a setting of one set of drive arrangement isotructure, stand when two running-boards of bicycle are trampled as the user, four sets of drive arrangement that just can drive every running-board both sides simultaneously drive, thereby having solved among the prior art drive connecting rod of the bicycle of chinese patent numbers 201420590209.3 and having adopted unilateral wall scroll structure, the user is when stepping on the treadle drive because the pulling of drive connecting rod is unilateral atress, cause the freewheel clutch atress inhomogeneous, split very easily, shortcoming such as very not durable, consequently, the utility model discloses a bicycle driver's freewheel clutch atress evenly, can not split, very durable, and trample very light and steadily, very laborsaving.