If one party suffers from mental illness during the period of husband and wife's living together and cannot recover after a long time, the other party insists on divorce. If mediation fails, divorce can be granted according to the law.
 1. One party suffers from a disease that is legally prohibited from marriage, or one party cannot have sexual behavior due to physiological defects or other reasons, and is difficult to cure.
 2. Lack of understanding before marriage, hasty marriage, and failure to establish marital relationship after marriage, making it difficult to live together.
 3. Those who conceal mental illness before marriage and cannot recover after marriage, or marry the other party because they know that the other party is suffering from mental illness before marriage, or one party suffers from mental illness during the life of the husband and wife and cannot recover after a long time of treatment.