Generally speaking, kidney stones are caused by the crystallization of calcium oxalate in the kidneys due to the lack of water and poor dietary habits. Usually, it is necessary to adjust the diet, as far as possible, do not eat substances rich in calcium oxalate, such as non-vegetarian food, greasy food, easy to produce calcium oxalate stones. It is important to drink more water so that calcium oxalate does not easily precipitate in the kidney pelvis and form stones. If the symptoms of kidney stones appear, you need to go to the hospital in time.