Loan amount, repayment method, loan type, loan interest rate, loan purpose, etc. The key contents of commercial banks' review of loan contracts include:

1. Loan amount: to ensure that the loan scale matches the borrower's repayment ability.

2. Repayment method: it is to determine whether the borrower can repay the loan on time according to the agreed method.

3. Type of loan: It is to ensure that the loan is used for legal and compliant purposes and prevent funds from flowing into high-risk areas or being used for illegal activities.

4. Loan interest rate: it is to ensure the rationality and compliance of interest rate and prevent usury and other problems.

5. Loan purpose: Ensure that the loan funds are used for legal and compliant purposes.