What if the child's social security is not enough for one year?

Legal analysis: it can be returned. The social security payment period is accumulated monthly, and every accumulated 12 months is one year. As long as you pay 12 months, it is one year.

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.