According to the announcement issued by the National Bureau of Statistics, as of 2022, the warm-keeping products of middle-aged and old-aged cotton trousers on the market are saturated or even surplus, and this kind of business is not easy to do. Cotton trousers refer to trousers with cotton wadding in the middle, including baby's foot-wrapped trousers, children's dustpan trousers, adult's slim elastic belt cotton trousers, and old people's split cotton trousers.