The small can of milk powder in the live broadcast room is a matter of personal choice. Different sizes of milk powder cans are designed for parents with different needs. They will choose to bring small cans of milk powder with them for breastfeeding, trial use, and travel. Mothers who are expecting to give birth will choose to buy small cans for trial use, and maternal and child stores will also choose to buy them. Recommend the small can to moms, and repurchase the large can to get money. In the Internet era, live broadcast rooms mainly refer to online live broadcast programs launched by a certain person or an organization.