The validity of the divorce agreement is indefinite, and it takes effect from the date when the husband and wife dissolve the marriage relationship, that is, from the date when the husband and wife receive the divorce certificate issued by the Civil Affairs Bureau or the date when the court judgment is read out. Both men and women who voluntarily divorce mainland residents should * * * register for divorce at the marriage registration office where one party's permanent residence is located.

According to the provisions of the Civil Code of People's Republic of China (PRC), the divorce agreement takes effect after the divorce registration, and the divorce agreement is long-term, and can be brought to court within 3 years. The divorce agreement is valid for a long time after it is signed, and there is no time limit. Moreover, after the divorce agreement is signed by both men and women and registered for divorce, it has legal effect. If one party fails to comply with the contents of the agreement, the other party may bring a lawsuit to the court for performance. Divorce agreement is a written agreement on matters related to the dissolution of marriage relationship signed by husband and wife on the basis of mutual willingness due to emotional breakdown and approved by marriage registration authority or court. The main contents of the model divorce agreement include: the expression of intention of both parties to agree to dissolve the marriage relationship, the ownership of child custody, the amount of child support and its delivery method, and the division of property. Its legal basis is the Marriage Law and other relevant laws.

The divorce agreement is valid for a long time after it is signed, and there is no time limit. The legal effect of divorce agreement has the following three provisions: 1. After the divorce agreement is signed by both men and women and registered for divorce, it has legal effect. If one party fails to comply with the contents of the agreement, the other party may bring a lawsuit to the court for performance. 2. After the divorce agreement is signed, it is valid for a long time and there is no time limit. 3. If only the divorce agreement is signed and the divorce registration is not actually handled, the agreement will not take effect.

Legal basis: Article 1076 of the Civil Code of People's Republic of China (PRC) stipulates that if a husband and wife divorce voluntarily, they should sign a written divorce agreement and apply for divorce registration in person at the marriage registration office. The divorce agreement shall specify the expression of the will of both parties to divorce voluntarily and the consensus on matters such as child support, property and debt disposal.