Patients with kidney stones are not allowed to drink cola. For patients suffering from kidney stones, it is recommended to drink more plain water in normal times to increase the urine volume by increasing the fluid intake, so as to maintain a certain degree of dilution of urinary solutes and reduce the deposition of calcium, oxalate or other stone solutes, so as to achieve a reduction in the supersaturation of the urinary stone components and prevent stone formation and recurrence, and it is recommended that the amount of water consumed per day be more than 2,000 ml, which can, to a certain extent, reduce stone formation and recurrence. Regarding the type of water to drink, non-dairy liquids with low oxalic acid content are considered appropriate. Excessive consumption of caffeine, black tea and Coca Cola should be avoided. Normally, attention should be paid to exercising more, drinking more water and urinating more to promote the discharge of stones. Patients need to consult the doctor for examination and early treatment if they feel unwell.