A thin-wall wrapping structure of a cylinder comprises a top keel, a bottom keel, border keels, frame sawtooth hanging parts, vertical keels, vertical keel sawtooth hanging parts, sound-insulation filling material and a covering plate. The vertical keels and the border keels are vertically connected between the top keel and the bottom keel, the border keels are connected with structural columns through the frame sawtooth hanging parts which are distributed at intervals in the vertical direction, and the vertical keels are connected with the structural columns through the vertical keel sawtooth hanging parts which are distributed at intervals in the vertical direction; the covering plate is fixed on the vertical keels and the border keels through bolts, and gaps between the structural columns and the covering plate are filled with the sound-insulation filling material. According to the thin-wall wrapping structure, the thickness of the wrapped cylinder is reduced, overall stability is good, construction is simple and flexible, a pre-control role can be effectively played in the common quality problems that the plate surface is rugged, has cracks and the like, the thin-wall wrapping structure is suitable for the rugged wall surface and the column surface needing to be wrapped, and facing boards can comprise gypsum plaster boards, calcium silicate boards, metal facing boards, wood facing boards and the like.