1, drink a lot of water to urinary stones have a preventive effect, is also the most effective way to prevent. 2, control the protein, sugar intake, to increase the amount of fresh vegetables and fruits to eat. Vegetables and fruits contain vitamin B1 and vitamin C. Their final metabolites in the body are alkaline, and uric acid is easily dissolved in alkaline urine, so it is beneficial to treatment. 3, do not take too much cod liver oil. Cod liver oil is rich in vitamin D, which has the function of promoting the absorption of calcium and phosphorus in the intestinal membrane, suddenly increasing the excretion of calcium and phosphorus in the urine, which is bound to produce precipitation and easily form stones. 4. If you consider that it is related to food and milk powder, suspend the milk powder or diet you were using. Early onset of pediatric kidney stones, older children often complain of pain in the lower back or groin, while children who do not complain show crying, pale face and cold sweat. There may be poor urination, dripping urine, interruption of urination, difficulty in urination, or even hematuria, some accompanied by vomiting and diarrhea. If urinary tract infection is complicated, the patient will be seen with systemic symptoms, such as low fever, loss of appetite, wasting, and growth retardation. Ultrasound is a simple and easy way to detect kidney stones early. How to take care of a child with kidney stones? Regarding the daily care of children with kidney stones, first, except for children with severe disease who should rest in bed, children in general should be more active to facilitate the discharge of stones; second, actively prevent and treat infections; third, drink more water, and children with anuria should be restricted to drink according to their condition; fourth, closely observe the urine color, urine volume and properties of children; fifth, appropriately restrict foods with high calcium content and avoid foods with high oxalate content, such as juice, chocolate, etc. Sixth, strengthen the basic care of the child, change the underwear regularly, change the diapers of infants and children, and wash them promptly after defecation; seventh, if you want to drink milk, it is best to drink it during the day or within 4 to 5 hours before bedtime.