The formation of kidney stones is directly related to our usual drinking habits, dietary habits, environment, genetics and to certain diseases. If the kidney stones are relatively small, such as those with a diameter of about 5mm, they usually do not need special treatment. In addition, some patients after surgery also need to pay attention to dietary habits, mainly to avoid further increase of stones or to prevent recurrence. Patients with kidney stones need to pay attention to the following issues in terms of diet. First of all, if the urine composition analysis suggests high calciumuria, you should pay attention to eat less food with high calcium content, especially food with high calcium oxalate content, such as strawberries, grapes, spinach, chocolate, etc. Pay attention not to drink milk before going to bed, because milk has high calcium content, and the amount of urine secreted by the kidneys at night will be reduced, resulting in concentrated urine, which will easily cause stone formation. However, for most patients with non-high urinary calcium, there is no need to restrict calcium intake, and even for some patients with enterogenic hyperoxaluria, there is a need to increase calcium intake, thus increasing the excretion of oxalic acid through the intestine and reducing the excretion of urinary oxalic acid. Secondly, if the uric acid stones are caused by patients with hyperuricemia, in this case it is necessary to pay attention not to eat foods with high purine content, such as animal offal, seafood, soy products, beer, etc. In addition, foods with high protein content such as meat need to control the intake, such as beef, eggs, etc. The most important thing is to drink more water, urinate more often and exercise more. It is recommended to drink more than 2500ml of water daily, which can dilute the urine, and with more exercise, some small stones can be discharged from the body through the flushing effect of urine. In summary, kidney stone patients usually need to drink more water, urinate more often, exercise more, eat less food containing high purine, control the intake of high protein and meat.