Fever in patients with nephritis is usually caused by viral infection or bacterial infection. If the body temperature is below 38.5℃ without any special discomfort, the body temperature can be reduced to normal on its own without medication, simply by drinking more hot water and physical cooling. If the body temperature is higher than 38.5℃, some non-steroidal anti-inflammatory drugs can be applied, such as ibuprofen extended-release capsules, and the dosage of the drugs should be calculated according to the glomerular filtration rate. If the glomerular filtration rate is above 60 ml/min, just apply according to the normal human dose. If you still have fever after 2 days of NSAID application, you need to go to the hospital to check the blood routine, etc., to determine the cause of the disease and then carry out symptomatic treatment according to the cause of the disease.