The reasons why kidney stones are easy to recur are personal anatomical factors, incomplete stone removal and dietary factors. 1. Individual anatomical factors: when patients have urinary tract deformities or obstruction, ureteral connection site stenosis, etc., chronic hydronephrosis or chronic urinary retention will occur, resulting in recurrent stone attacks. 2. Incomplete stone removal: If the kidney stones are large and need to be removed or removed after lithotripsy, it is easy to retain some of the small stones during the operation, leading to recurrence of stones. 3. Dietary factors: kidney stones are commonly composed of calcium oxalate stones, calcium carbonate stones, xanthine stones, uric acid stones, magnesium ammonium phosphate stones. If you eat too much food containing the above ingredients, such as animal offal, seafood, beer, spinach, it is easy to lead to stone recurrence. The recurrence of kidney stones may also be caused by other factors, and patients are advised to consult a doctor for further examination to determine whether treatment is needed.