The main link of systemic edema caused by acute nephritis is the abnormalities of inflammation and tubulobulb feedback in the body. Inflammation is the body’s protective response, and early on there will be vasodilation while the vascular endothelium is contracted at this time, which will cause an increase in cellular spaces, so vascular permeability will increase, so a large amount of fluid overflow will form inflammatory edema. In addition, there is a tubulo-globular feedback imbalance in patients with nephritis, which can lead to sodium-water retention. The essence is a significant decrease in glomerular filtration rate without a corresponding decrease in tubular reabsorption. Edema is the main symptom of acute glomerulonephritis and occurs mainly in the eyelid area. The disease is more common in children and less common in adults, except for facial edema, which is almost always accompanied by hematuria. This is a disease that can heal on its own and requires about 1 month of bed rest. If the facial edema is very strong, you can take appropriate diuretic drugs such as furosemide and hydrochlorothiazide. During this period, it is important to eat less pickled foods and not to consume more than 5g of salt per day to facilitate recovery from the disease.