Legal analysis: if the large loan in marriage is an individual loan, it does not need to be signed by both husband and wife; If it is a loan from both husband and wife, both husband and wife need to sign it. However, even if only one party signs, the creditor can prove that the debt is used for husband and wife's life and production and operation, and both husband and wife need to bear the repayment obligation.

Legal basis: Civil Code of People's Republic of China (PRC).

Article 1062 The following property acquired by husband and wife during the marriage relationship is the common property of husband and wife and belongs to them:

(1) Wages, bonuses and remuneration for labor services;

(2) Income from production, operation and investment;

(3) Income from intellectual property rights;

(4) Inherited or donated property, except as provided for in Item 3 of Article 1063 of this Law;

(five) other property that should be owned by * * *.

Husband and wife have equal rights to dispose of the same property.

Article 1063 The following property is the personal property of one of the spouses:

(1) one party's premarital property;

(2) Compensation or compensation obtained by one party for personal injury;

(3) Property that is determined to belong to only one party in the will or gift contract;

(4) Daily necessities used exclusively by one party;

(five) other property that should be owned by one party.

Article 1064 The debts incurred by both husband and wife for the same signature or by one party afterwards, and the debts incurred by one party in his own name for the daily needs of the family during the marriage relationship, belong to the same debt of husband and wife.