The stone is large or uneven and grotesque. As long as the stone exceeds 1CM, it is difficult to remove the stone. It is best to consider extracorporeal lithotripsy or surgical lithotripsy. Surgery is the best. Will not lead to the final recurrence because the stone is not clean. Kidney calculi should pay attention to (1) controlling the calcium intake in his diet. (2) Do not eat foods rich in oxalate, including beans, beets, celery and celery. Strawberry and cabbage vegetables should also avoid alcohol, caffeine, tea, chocolate, dried figs, mutton, stone fruits, green peppers, black tea and poppy seeds. (3) Pay attention to the intake of protein. (4) Eat less salt. (5) Animal viscera should not be eaten in large quantities. (6) Limit the dosage of vitamin C, which can prevent kidney calculi and control the recurrence of kidney calculi.