If the spouse does not sign a mortgage loan before marriage, it will not bring trouble to the spouse. According to the public information of the Political Science and Law Network, if one party buys a house before marriage and mortgages after marriage, and the other party fails to sign the loan document, the loan will only be repaid by the purchaser personally during the repayment period, and the spouse will not be involved. If the purchaser registers the property with his spouse during the marriage, or uses the property jointly owned by the husband and wife for repayment during the repayment period, the spouse may bear the repayment responsibility.