The traditional mortgage interest rate model is floating interest rate, that is, the repayment interest rate of the lender is changed according to the change of interest rate at that time. This model is suitable for the time when the interest rate is expected to fall. For mortgage borrowers, choosing fixed interest rate or floating interest rate may be decided by considering the following three factors: first and foremost, it is necessary to judge whether China's interest rate level is in the stage of raising interest rates or lowering interest rates; The second is to carefully consider your income. If you think your future income is relatively stable enough to pay for a fixed mortgage, you may wish to choose a fixed interest rate loan; Third, if you apply for a second or more housing loan, you can consider locking the medium and long-term housing loan interest rate with a fixed interest rate loan to avoid interest rate and inflation risks.