What should I do if the card number changes after the social security card is changed?

Legal analysis: the social security card number is invalid or has no information, mainly because the card is demagnetized or the magnetic stripe information is wrong. Enterprise employees and retirees can hold their own cards and the original and photocopy of their ID cards, or entrust their own employees (the client also needs to carry the original and photocopy of their ID cards) to go to the social security service reception desk or social labor insurance agencies in the four districts of the city to reissue them, or hold their own cards to the social security card reception office of the municipal insurance agency.

Legal basis: People's Republic of China (PRC) Social Insurance Law.

Article 4 Employers and individuals in People's Republic of China (PRC) shall pay social insurance premiums according to law, and have the right to inquire about payment records and personal rights and interests records, and ask social insurance agencies to provide social insurance consultation and other related services.

Individuals enjoy social insurance benefits according to law and have the right to supervise the payment of their own units.

Article 58 An employing unit shall, within 30 days from the date of employment, apply to the social insurance agency for social insurance registration for its employees. If the social insurance has not been registered, the social insurance agency shall verify the social insurance premium it should pay.

Employees-free individual industrial and commercial households who voluntarily participate in social insurance, part-time employees who do not participate in social insurance in the employing unit and other flexible employees shall apply to the social insurance agency for social insurance registration.

The state establishes a national unified personal social security number. Personal social security number is a citizen's identity number.