The invention discloses a housing unit, a preparing method thereof and a house containing the same, and belongs to field of bamboo material buildings. The preparing method comprises the following steps: based on bamboo splits, the multi-layered structure housing unit is quickly prepared by weaving, winding, bonding and the like, the structure strength of the housing unit is ensured by the combination of reinforcing ribs and filler layers and the self-weight of the housing unit is reduced, and the housing unit is provided with a support by arranging a frame type supporting structure to form a house which is composed of at least one housing unit and a supporting structure. According to the invention, the housing unit or simple in structure and convenient to prepare by preparing a housing unit with a multi-layered structure and a supporting structure for supporting the housing unit, the stability and safety of the housing unit and the house are guaranteed, the economic cost of house construction is effectively reduced, the energy-saving and environment-friendly requirements can be met, and the method has excellent popularization and application values.