Legal analysis: after the baby is born, the hospital will issue a birth certificate first, then you can register, and then go to the community/social security bureau to handle the children's mutual fund. If it is a baby registered in a foreign country, you need to add the original and copy of the child's household registration book; Original and photocopy of parents' household registration book; Proof of the relationship between the applicant and his parents, the original and photocopy of Chengdu residence permit; With this information, you can go to the social security bureau to handle it.

Legal basis: Social Insurance Law of People's Republic of China (PRC) Article 1 This Law is formulated in accordance with the Constitution in order to standardize the social insurance relationship, safeguard the legitimate rights and interests of citizens to participate in social insurance and enjoy social insurance benefits, enable citizens to enjoy the fruits of development and promote social harmony and stability.