How to transfer social security when changing companies?

Legal analysis: when the company changes, social security can be transferred. The original unit cancels the labor contract, returns my information and proof, and goes to the human resources department of the new unit to handle the social security transfer. As long as the insured applies, the remaining work will be handed over by the social security departments of the two places. It doesn't matter if the social security is paid directly after the transfer.

Legal basis: Article 58 of the Social Insurance Law of People's Republic of China (PRC) stipulates that the employer shall apply to the social insurance agency for social insurance registration for employees within 30 days from the date of employment. 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.