Legal analysis: the household registration book is the household registration number. When the household name is a self-supporting new household, a set of numbers given to the household by the household administration organ is special, and each household name is unique. The account book has both account number and account book number. When the account book is lost and reissued, its account number remains unchanged and the account book number is rearranged.

Legal basis: Article 5 of the Regulations on Household Registration in People's Republic of China (PRC): Household registration is based on households. 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.