Nanjing baby medical insurance card is changed every few years.

According to Baidu Encyclopedia, the service life of normal children's social security cards is five years.

For those who apply for social security cards,/kloc-minors under the age of 0/6 can be handled by guardians on their behalf, and the guardian's ID card and the original and photocopy of the children's household registration book should be submitted. Minors over the age of 6 should also provide their own electronic photos with a white background when their children are not present.