How old can a child start paying social security?

Children can start to pay social security when they reach the age of 16.

According to official website of the Social Security Bureau, as long as children reach the age of 16, they can participate in social insurance, including endowment insurance and medical insurance. If the children are staff members of institutions or enterprises, they should pay social insurance from the beginning of employment to the retirement age. When you reach retirement age, the minimum payment must be 15 years before you can retire and receive a pension. If you are participating in flexible employment pension insurance, the accumulated minimum payment is over 15 years, and you will retire at the retirement age.