The invention discloses a flower-drum structure and a bicycle. The flower-drum structure can comprise an axis, an axle housing component, a tower footing component and a driving structure, wherein the axle housing component and the tower footing component are sheathed at the outer side of the axis; the axle housing component is positioned at the left side of the tower footing component, and a cavity body is formed between the axle housing component and the outer wall of the axis; the driving structure is positioned at the bottom part of the cavity body; and at least one part of the tower footing component is inserted into the bottom part of the cavity body so as to drive the axle housing component by the driving structure. By the technical scheme disclosed by the invention, the waterproof property of the flower-drum structure can be improved.