Pediatric nephritis is one of the most common diseases in children, and while it is treated with medication, parents should also pay special attention to some habits and dietary habits. When a child suffers from nephritis, the amount of salt control must be paid special attention to. This can better control the condition and avoid causing the deterioration of nephritis. The following can give parents some guidance. In acute nephritis, it is often advocated to control the entry of sodium into the body because in nephritis, due to abnormal sodium excretion function of the kidneys and poor glomerular filtration rate, sodium enters the body and is not easily excreted and retained, causing edema. In addition, the secretion of aldosterone is higher in nephritis, which enhances potassium and sodium retention in the renal tubules, prompting water and sodium retention. When salt enters the body and is absorbed into the blood, it not only increases the burden on the kidneys, but also makes the plasma osmosis more hypertonic, and the high osmotic pressure increases the water absorption and blood volume, which increases the burden on the heart. Sodium ions can enter the tissue through the capillary tube wall, is the tissue fluid osmotic pressure increased, and part of the water transfer to the tissue, the tissue interstitial water increased, aggravating the swelling. So salt should be avoided in nephritis, but it should be noted that long-term salt avoidance not only affects appetite, and does not help the recovery of kidney lesions, and is harmful to the general health of growing children, and can even cause hyponatremia syndrome. In the acute phase of paediatric nephritis there is heart failure, hypertension, swelling, low urine should also avoid salt to prevent increased blood volume, high blood pressure and swelling aggravated. When the swelling subsides, the urine volume is normal, and the blood pressure returns to normal, the diet can be low salt, not more than 2 grams per day, and then continue to observe, and the condition improves day by day, you can gradually over to a normal diet. When the nephritis swelling is serious, hypertension is significant, urine volume is significantly reduced, or there is heart involvement, in addition to avoiding salt, should also be limited according to the condition of protein and fluid intake, diet based on sugar and fat. The child is active, and the body leaks faster, so it prefers heavier food. Then parents must help their children to keep a good check and give them a scientific diet. The amount of salt intake is reasonably controlled to avoid aggravating the child’s condition. It is not conducive to the treatment of nephritis.