Patient: Description of condition (onset, main symptoms, hospital visited, etc.): The onset of the disease is more than two years old, and there are no obvious painful symptoms, except that sometimes it feels a little painful to relieve oneself. After drinking medicine for a period of time, the symptoms are much better. Can kidney stone patients drink soy milk and eat soy products? Some people say no, so I would like to ask for advice. I’m afraid that the kidney stone will get bigger slowly, and is it good to have surgery? Is it painful? Zhou Shuigen, Department of Urology, General Hospital of Nanjing Military Region: Many people think that kidney stone patients should eat less soy products because they are high in calcium. In fact, this is a misunderstanding. Because although high calcium can easily lead to kidney stones, most Chinese people are calcium deficient, and low calcium is more likely to produce stones than high calcium, so for the average Chinese, calcium supplementation will not only not increase the incidence of stones, but will reduce the incidence of urinary stones. As for whether kidney stones need surgery, it depends on the size and number of stones and kidney function, and some tests such as intravenous urography (IVU) are needed to decide.