To change the custody of children, there are generally the following situations in practice:
 1. After divorce, if one or both of the spouses' ability to support their children has changed significantly, they can request to change their child support rights;
 2. The change of child custody is generally determined by both parties through negotiation;
 3. If the negotiation fails, a lawsuit can be filed with the court to request the change of child custody;
 4. The change of custody requires evidence to prove that taking care of children by oneself is more conducive to the growth of children;
 5. The child who has reached the age of 18 does not need anyone's custody and support. Therefore, after the child has reached the age of 18, there is no change in custody.
 If you want to change the child custody, you need to meet the following conditions:
 1. The party who lives with the child is unable to continue to support the child due to serious illness or disability;
 2. The party living together with the child does not fulfill the obligation to support or maltreats the child, or the living together with the child has adverse effects on the physical and mental health of the child;
 3. A minor child over the age of 10 who is willing to live with the other party and who has the ability to support him or her;
 4. There are other justifiable reasons to change the custody right.