Of course. As long as the IOU is the true meaning of both husband and wife, the content does not violate laws and regulations, social public order and good customs. According to the law, debts incurred by husband and wife in the same life should be paid jointly. * * * If the same property is not paid off, or the property belongs to each other, it shall be paid off by mutual agreement. Article 1064 of the Civil Code of People's Republic of China (PRC) * * * Debts incurred by both husband and wife with the same signature or later ratified by one of the husband and wife, and debts incurred by one of the husband and wife in his own name for the daily life of the family during the marriage relationship belong to the same debt of the husband and wife. Debts incurred by one spouse in his own name during the marriage relationship that exceed the needs of family daily life are not joint debts of husband and wife; However, the creditor can prove that the debt is used for the husband and wife's life, production and operation, or based on the same meaning of both husband and wife.