The utility model discloses a can dismantle bicycle lamp, including a mount and a LED lamp section of thick bamboo, the mount includes retainer plate and rotation axis, the retainer plate is located the below of rotation axis, the left side of retainer plate is provided with fixtion screw bolt, the upper end of retainer plate is provided with the roating seat, the roating seat is fixed mutually with the rotation axis, the top of rotation axis is provided with the fixation clamp, the right side of fixation clamp is provided with the spanner, the left side of fixation clamp is provided with the movable clamp plate that lives, the movable clamp plate that lives is the arc setting, the top at the mount is fixed to a LED lamp section of thick bamboo, a LED lamp section of thick bamboo includes lamp holder, lamp body and tail -hood, the lamp holder is located the left side of lamp body, be provided with the burr on the right -hand member of lamp body, the tail -hood is located the right side of lamp body, this can dismantle bicycle lamp has simple to operate, is convenient for to adjust direction and firm advantage.