Once nephrotic syndrome is diagnosed, corticosteroid therapy becomes a primary treatment, and the commonly used steroid is prednisone. If there is liver damage or the treatment effect of prednisone is not good, oral prednisolone or intravenous methylprednisolone can be used. Due to its long half-life and severe side effects, dexamethasone is now generally less used. The course of treatment with corticosteroids for nephrotic syndrome is relatively long, needing about one to one and a half years. During this process, the use of steroids has three phases: the initial full-dose phase, during which a relatively large dose of the hormone is used for about two to three months; the second phase is a slow reduction process; the third phase is a low-dose maintenance process. Overall, during the use of steroids, patients must regularly follow up at outpatient clinics, and adjust the steroids according to the doctor's advice. One must not arbitrarily reduce the dose or stop the medication, as this can easily lead to a relapse of nephrotic syndrome.