According to the determination, every 100g of fresh fruit contains vitamin C100 ~ 200mg. It is 5~8 times higher than citrus, 19~83 times higher than apple and 32~ 130 times higher than pear. It is considered that eating fresh fruit and its juice products can prevent the production of ammonium nitrite and reduce the content of cholesterol and triglycerides in blood. It has the functions of clearing away heat and promoting diuresis, removing blood stasis and treating stranguria, and is suitable for patients with urinary calculi. Second, carambola: or carambola. Contains sugar, vitamin B 1, vitamin C and oxalate, etc. The fruit is green and yellow, with five edges, and the flesh is crisp and soft, which can be eaten raw or candied. Traditional medicine in China is used to treat urolithiasis, which is suitable for patients with bladder stones or ureteral stones. All fruits can be eaten except litchi, longan, mango, durian and pineapple. In addition, be careful not to eat persimmons, because a substance inside will lead to stones. Of course, fruits that can be used as adjuvant therapy for gallstones are definitely the first choice. As for the fruit diet that is helpful for the treatment of gallstones, citrus fruits and other foods rich in vitamin C can effectively prevent the formation of gallstones, and for those who have formed gallstones, they can prevent the disease from getting worse.