Log in to the national medical insurance service platform and enter the backend, click the add button under family members, enter the child's name and ID card information, etc. and then submit the commitment letter generated by the system to complete.

The application method for adding is as follows:

1. Open the National Medical Insurance Service Platform APP on your mobile phone to enter.

2. After entering the APP, click the My button in the lower right corner.

3. In the login interface that appears, click Account Login, enter your adult’s account number and password, and click Login.

4. In the interface that appears, click the plus button under My Family Members.

5. After the page jumps, check the box to use ID card information for binding.

6. Enter the child’s name, ID number and relationship in the adding family member interface that appears.

7. Click on the personal commitment letter at the bottom of the page.

8. Click to generate a personal commitment letter on the page that appears.

9. At this point you can see the commitment letter generated by the system.

10. Click on the drop-down page to start signing.

11. Use your finger to write the person’s name on the screen and click the OK button.

12. At this point you can see the signature of the commitment letter that has been generated.

13. Click the Save Submit button at the bottom of the page.

14. In the dialog box that appears, click Save or Not as needed.

15. After the page jumps, you can see that the application for the child’s electronic medical insurance voucher has been completed and added to the family members.

16. Click to enter and you will see the corresponding electronic medical insurance certificate.