Calcium oxalate kidney stones are the more common type of kidney stones, which are denser and harder. Calcium oxalate stones are often formed due to the high level of oxalic acid in the body, which combines with calcium in the urine and forms calcium oxalate stones over a long period of time. When diagnosed with calcium oxalate stones, in addition to extracorporeal shock wave lithotripsy, medication and surgical treatment, you need to take dietary precautions in your daily life, such as reducing the intake of oxalic acid-rich foods, avoiding drinking strong tea for a long period of time in your daily diet, reducing the intake of spinach, lettuce and other foods, and decreasing the intake of strawberries, prunes and other fruits. This can reduce the body intake of oxalic acid, to prevent calcium oxalate stones. At the same time, you need to drink more water appropriately, and keep your daily water intake above 2000mL to prevent urine concentration. Prolonged urine concentration can also lead to elevated levels of oxalic acid and purine in the urine, which can lead to the formation of calcium oxalate stones or uric acid stones.