Increased urination at night in chronic nephritis is generally considered to be caused by impaired renal function, high blood pressure, drug factors, inflammatory factors, and bad lifestyle habits, which need to be analyzed specifically. 1. Impaired renal function: Chronic nephritis may lead to impaired renal function, and atrophy of both kidneys may occur in advanced stage, which may lead to impaired renal tubular function, thus causing increased urination. 2. Hypertension: patients with chronic nephritis may lead to elevated blood pressure. Hypertension has a great impact on the human body and may cause chronic renal failure, which may lead to abnormal urination and increase nocturia. 3. Drug factors: certain drugs that damage the kidneys may also cause increased nocturia, such as antipyretic and analgesic drugs, including aspirin, ibuprofen, diclofenac, etc., which cause kidney damage and increased nocturia when taken for a long time. 4. Inflammatory factors: If the bladder suffers from inflammation, it will also cause the urinary center to be in a state of excitement, which in turn causes frequent urination and increased nocturia. 5. Bad life habits: some patients may increase nocturia if they consume more water before going to bed. Patients with chronic nephritis who are not feeling well are advised to go to regular hospitals in a timely manner and receive standardized treatment under the guidance of a doctor.