Patients with kidney stones can also take calcium supplements. The effect of calcium supplementation on kidney stones is a relative issue and not an absolute factor. Although most stones contain calcium, the main factor is whether calcium is combined with oxalic acid. If the patient consumes too much oxalic acid at the same time, the calcium is absorbed more, and this situation is very easy to form calcium oxalate, which is insoluble in water, so it is very easy to develop stones. Patients with kidney stones who want to take calcium supplements should control the intake of oxalic acid-containing foods. If both are consumed too much at the same time, it will aggravate the patient’s stone symptoms. From the above, patients with kidney stones can also take calcium supplements. It is recommended that if patients have stones and also want to take calcium supplements, it is best to do a stone composition analysis, which can guide the diet. Usually drink more water to dilute the urine to play a role in the prevention of stones.