The utility model relates to a bicycle field especially relates to a drive module of bicycle, include: go up fork, fork, well pipe, five -way pipe, axis, rear wheel, chain wheel, flywheel and hollow grafting pipe down, go up the fork, down fork and well pipe enclose into the drive module support frame jointly, be equipped with positioning mechanism in the grafting pipe front end opening, positioning mechanism includes that backup pad, symmetry locate spring leaf and rigid coupling in the reference column in the spring leaf outside of backup pad both sides, the utility model discloses novel structure, reasonable in design can be connected with other subassemblies of bicycle through the pipe of pegging graft, and installation and disassembling operation are simple swift, and small behind thesplit, occupation space is little, is convenient for store and transport, when damaging appears in the bicycle subassembly, can in time keep in repair or change the subassembly.