Legal analysis: the responsibility of repaying arrears. The loan guarantor refers to the behavior that the guarantor and the creditor agree that when the debtor fails to perform the debt, the guarantor will perform the debt or assume the responsibility according to the agreement. Loans overdue usually refers to the phenomenon that after the loan expires, the borrower fails to repay the principal and interest of the loan to the bank that issued the loan according to the loan term agreed in the loan contract, and fails to go through the relevant extension or lending procedures, resulting in the loan exceeding the agreed term.

Legal basis: Article 394 of the Civil Code of People's Republic of China (PRC) guarantees the performance of debts. If the debtor or a third party mortgages the property to the creditor without transferring the possession of the property, if the debtor fails to perform the due debt or realize the mortgage according to the agreement of the parties, the creditor has the right to be compensated in priority for the property. The debtor or the third party specified in the preceding paragraph is the mortgagor, the creditor is the mortgagee, and the property that provides guarantee is the mortgaged property.