In general, kidney crystals can drink milk in small amounts, do not drink too much for a long time, at this time the diet is based on low-calcium, low-sodium, low purine. Although, clinically, the existence of kidney crystals is closely related to kidney stones, but, in general, kidney crystals can drink a small amount of milk, appropriate control of intake usually will not have a negative impact on the disease. However, patients should not drink too much milk for a long time. The main reason is that milk contains a lot of calcium, otherwise it will accelerate the development of the disease to a certain extent and promote the formation of stones. Subsequently, it induces kidney stones, causing patients to suffer from renal colic, hematuria, nausea, vomiting, irritability and other symptoms. In addition, renal crystallization patients also need to avoid excessive intake of high purine food, such as sardines, animal offal, etc., need to low phosphorus, low sodium, low calcium, low purine food. To summarize, patients with renal crystallization need to strengthen the dietary management, rationalize the diet, and go to the hospital on time to monitor the changes of their condition.