This multifunctional sofa, which has applied for an appearance patent, accurately conforms to the current industrial development situation of the integration of small-sized household and light-weight office. It not only responds to the market demand for intensive urban living space, but also covers multiple application scenarios such as family living, temporary rest and small-scale meeting. Its patented log texture and arch shape design have the innovative advantages of cabinet integration, hidden structure and soft line aesthetics, it is not only different from the single function limitation of traditional furniture, but also adapts to the mainstream home decoration styles such as modern silence and northern Europe with warm natural texture. It has broad development prospects in the future in the renovation of stock houses, youth apartments and shared office scenes, which can not only bring differentiated competition premium and patent barrier protection for brands, but also reduce furniture purchase cost and resource consumption through the design of one thing for multiple purposes, and help promote the concept of green and low-carbon sustainable home, it has considerable economic benefits and social value to promote the popularization of lightweight and humanized home design.