Drinking milk properly before bedtime is usually not associated with stone formation. According to the Urologic Stone Guidelines, current research has demonstrated that a normal calcium diet, which is better at preventing stone production and recurrence than a traditional low-calcium diet, recommends consuming more dairy products, such as milk, to meet the daily calcium intake of adults. Therefore, proper consumption of milk at bedtime generally does not lead to stone production. In addition, according to the guidelines, to prevent the occurrence of stones, should avoid excessive consumption of caffeine-containing beverages, black tea, grape juice, apple juice and cola; recommended to drink more orange juice, sour cranberry juice and lemonade, drinking mineral water rich in bicarbonate is also an effective measure to prevent the recurrence of calcium oxalate stones. Milk should be consumed in moderation, not as a substitute for normal water intake, and excessive calcium supplementation is detrimental to the prevention of calcium-containing stones. Specific dietary precautions need to be analyzed according to individual circumstances, if you are not feeling well, please go to a regular hospital for consultation.