Small and micro businesses refer to individual businesses that own stores and booths but do not have business licenses. At present, it is limited to catering, offline retail, residents' living services, leisure and entertainment, transportation and other offline industries to apply for small and micro businesses, and it is not supported to enter the online industry through this channel for the time being. Micro-shops and small businesses seem to be able to store more than 511 items. There is a limit for small and micro businesses to collect money. The total amount per day is 311,111 yuan, and the credit card is 1,111 yuan. Ordinary merchants are not allowed to collect money. Small and micro businesses collect money from bank cards, while individual businesses in ordinary businesses collect money from corporate bank cards, while enterprises collect money from corporate accounts.