1. The biological parents of children have full capacity for civil conduct when writing a child support agreement for children born out of wedlock;

2. Both parties entered into the agreement out of genuine will, and there was no fraud or coercion;

3. The contents of the agreement shall not violate the law or violate social public order and good customs;

4. The child's biological parents should sign the agreement and indicate the date of signing.

The contents of the agreement mainly include the following three requirements:

1. Who will raise the child xx born by both parties?

2. The other party shall pay xx (payment method) to the maintenance party every month until the child reaches the age of eighteen.

As one parent of the child, the other parent still has the right to visit the child. However, the number and time can be specified. Then both parties sign and sign the time. This Agreement on Guardianship of Illegitimate Children is made in triplicate, one for each party and one for the marriage registration authority, all of which have the same legal effect.

Refusal to pay alimony:

The biological father or mother who does not directly raise children born out of wedlock shall bear the responsibility for raising minor children or adult children who cannot live independently. Permission can be granted. If one party refuses to pay alimony, it can bring a lawsuit to the court. If he still refuses to listen to advice, receive education or execute the judgment, one party may apply to the court of first instance for compulsory execution.

Legal basis:

People's Republic of China (PRC) Civil Code

Article 143

A civil juristic act that meets the following conditions is valid:

(1) The actor has corresponding capacity for civil conduct;

(2) the meaning is true;

(three) does not violate the mandatory provisions of laws and administrative regulations, and does not violate public order and good customs.

Article 144

A civil juristic act carried out by a person without capacity for civil conduct is invalid.