For patients with nephrotic syndrome, hospitalization is usually required for 1-2 weeks, depending on the condition and the scope of treatment. For patients who are first diagnosed with nephrotic syndrome, what they need to do after admission is: 1. to improve the relevant examinations, assess the disease condition and assist in determining the cause of the disease, as well as to receive relevant symptomatic treatment and therapy. 2. to clarify the diagnosis and exclude contraindications after improving the relevant examinations, renal biopsy aspiration is feasible, which is an invasive test and requires the patient to be bedridden for 24 hours, as well as to be observed in the hospital for any complications. 3. After the completion of renal biopsy and puncture, the pathology report will be returned, and further treatment plan will be formulated according to the pathology results, and whether there is any adverse reaction to the drugs, so patients with nephrotic syndrome need to be hospitalized for 1-2 weeks.