Urine protein of 0.2g indicates the presence of proteinuria, attention should be paid to find the cause of proteinuria and give appropriate treatment. If it is due to physiological increase, which is common in strenuous exercise, mental stress and change of body position, it can be restored to normal after removing the causative factors, and no special treatment is needed; if it is due to pathologic increase, which is common in glomerular disease, tubulointerstitial disease, etc., it can be improved by medication and other treatments. 1. Physiological reasons: due to strenuous exercise, mental stress and change of body position, the permeability of the kidney’s filtration membrane increases, resulting in an increase in urinary protein detected in routine urine examination, resulting in proteinuria, which can be returned to normal after removing triggers, and does not require special treatment. 2. Pathological causes: common in glomerular diseases such as acute and chronic glomerulonephritis, lupus nephritis, etc.; tubulointerstitial diseases such as pyelonephritis, interstitial nephritis, etc.; can be treated by medication, hemodialysis, and plasma exchange. (1) Pharmacological treatment: Usually, glucocorticoids such as methylprednisolone and immunosuppressants such as cyclophosphamide can be chosen for treatment. If there is infection, amoxicillin can also be used to fight infection. (2) Hemodialysis: hemodialysis can be used if there are indications for hemodialysis. (3) Plasma exchange: If the condition is severe, intensive immunosuppressive therapy should be started as soon as possible, and plasma exchange may be chosen to improve the condition. In addition to the above reasons, there may also be other causes of proteinuria, it is recommended that the patient consult a doctor in a timely manner, follow the doctor’s instructions to standardize the diagnosis and treatment, do not self-medication.