Legal analysis: the household name of the household registration book consists of nine digits, which is randomly generated by the household administration system of the public security organ and is a number of household registration management of the public security bureau. It has no external function, and it is also convenient for internal management to find the original files.

Legal basis: Article 5 of the Regulations on Household Registration in People's Republic of China (PRC) takes households as the unit. The person who lives with the supervisor is a household and the supervisor is the head of the household. An independent family, with me in charge. Households living in institutions, organizations, schools, enterprises, institutions and public dormitories * * * set up separate households or separate accounts. The head of household is responsible for reporting household registration in accordance with the provisions of these regulations.