It is not necessarily illegal for a husband to conceal his debts from his wife. If the borrowed items of the debt are used for the husband and wife's daily life, production and operation, it is a joint debt of the husband and wife, and both husband and wife are jointly responsible for repayment; if it is an individual who exceeds the daily routine of the family, Debts incurred for daily needs, or debts that are not used for the husband and wife's joint life, joint production and operation, are personal debts.
Debts borne by one spouse in his or her own name during the marriage, which exceed the daily needs of the family, are not joint debts of the couple, but are personal debts of one spouse. However, this is excepted if the creditor can prove that the debt is used for the husband and wife's daily life, joint production and operation, or based on the mutual consent of the husband and wife. Debts borne by both spouses with the same consent, such as signatures or subsequent ratification by one spouse, as well as debts borne by one spouse in his or her own name for the daily needs of the family during the marriage, belong to the couple. Same debt.
Legal basis:
Article 1064 of the "People's Republic of China and Civil Code"
Both husband and wife must have the same signature or Debts borne by one spouse after the fact is later ratified by a mutual consent, as well as debts borne by one spouse in his or her own name for the daily needs of the family during the marriage, are joint debts between the spouses.
Debts borne by one spouse in his or her own name during the marriage, which exceed the daily needs of the family, are not joint debts of the couple; however, the creditor can prove that the debt is used for the joint purpose of the couple. Exceptions include life, sex, production and operation, or based on the consent of both spouses.