Kidney stone 0.5cm is a relatively small stone, usually not serious, will not cause obvious harm to the kidney, most of the patients have no discomfort symptoms. Kidney stone 0.5cm, generally can take conservative treatment to promote the discharge of stones, such as drinking a lot of water, both to promote the discharge of stones, but also to reduce the continued production of stones, the daily water consumption should be about 2000ml. At the same time, patients need to control their diet. If the composition of the stones has been analyzed, the diet can be restricted according to the composition of the stones. If no analysis of stone composition has been done, the main thing is to limit the intake of calcium and oxalic acid rich foods, such as milk, various dairy products and shrimp, celery, spinach, mangoes and other foods. In the case of gouty kidney stones, it is necessary to limit the intake of high purine foods, such as various meats, seafood and animal offal. In addition, it is recommended that patients actively participate in physical exercise, such as running or skipping rope, avoiding spicy and stimulating food, and keeping their body and mind happy, which are conducive to the discharge of kidney stones.