Failure to repay the loan will definitely bring trouble to the guarantor. According to the situation in loans overdue and the different guarantee methods, the impact will be different. If the loan is only overdue for a few days, both the borrower's credit information and the guarantor's credit information will leave overdue loan records, which will have a certain negative impact on the guarantor's desire to apply for a loan or credit card. After loans overdue, pre-lending institutions will generally find borrowers to fulfill their repayment obligations. If the overdue time exceeds a certain period, such as half a year, the lending institution may bring a lawsuit to the court, requiring the borrower and guarantor to undertake the repayment obligation. There are two ways of loan guarantee: general guarantee and joint liability guarantee. If it is a general guarantee, the borrower is still unable to pay off the due debt after being sued by the lending institution and enforced by the court, and the guarantor needs to bear the repayment responsibility, and there is no need to repay in the early stage. At this time, if the guarantor can't repay in full, the guarantor will also be listed as a faithless person, which will affect his application for various loans, and he can't even take the means of transportation such as airplanes and high-speed trains, and his work will be affected to some extent. Children can't go to private schools. If it is joint and several liability, after the loan expires, the lender can ask the borrower and the guarantor to repay at the same time, without waiting for the court to enforce it, which means that the repayment responsibility is relatively greater and clearer.