Divorce my son and move to another household. Do you need a divorce agreement?

Yes

Divorce agreement is mainly an agreement between men and women to divorce voluntarily, concerning the issue of child support and marital property. A written divorce agreement must be approved by the marriage registration authority or the court before it can take effect.

After divorce, you should handle the child's account. If the child has already registered an account, he needs to move to another account and needs the cooperation of the other party. If the child does not have a registered permanent residence, the party who has obtained custody of the child wants to register the account for the child. After the separation of husband and wife's household registration, they need to take custody of their children to the place where they are registered.