As an alternative to traditional wooden sofa legs, plastic couch legs are more affordable and portable. They also promote environmental sustainability.A sofa is a type of software furniture, an upholstered multi-seat with armrests on both sides. It originated in Western countries and was later introduced to Asia as one of the focal points of Western decor or modern home design. The frame of the chair is made of wood or steel and lined with cotton and other foam materials, which makes it more comfortable overall. The sofa's feet at the bottom support the seat and only guard against moisture from the floor harming the sofa's bottom. Existing sofa feet generally consist of a foot cushion and a base plate, between which the fixing is achieved by welding, which is not only difficult to work with. And when part of the sofa foot is damaged, the whole sofa foot must be removed and replaced, the manufacturing cost is high, part of the sofa foot is connected to the sofa through the thread Some sofa feet are connected to the sofa seat through the thread, this will cause the height of the sofa foot is not consistent, resulting in sofa tilt. The plastic sofa feet can balance this tilt and greatly increase the solidity of the sofa feet and also reduce the cost of sofa production, making it a new world for sofa feet.