Kidney stone and kidney cancer are two completely different diseases: 1. Kidney stone is a benign disease and can be completely cured, while kidney cancer is a malignant tumor and cannot be eradicated at the etiological level, but can only achieve clinical cure or clinical remission. 2. Kidney stone can be treated conservatively, for example, if the stone is relatively small in size and does not cause hydronephrosis, it can be treated with drugs for stone removal or Extracorporeal shock wave lithotripsy can be used. For patients with large kidney stones that cause serious damage, they can be treated by surgery. However, kidney cancer cannot be treated conservatively, once found, if there is a chance of surgery, it should be removed as soon as possible, together with kidney cancer and kidney tissue, and other treatments should be added after surgery.3. Kidney stones will not cause patients’ life threatening, will not cause metastasis to other organs, and will not cause damage to other organs. Kidney cancer, even after surgical resection or other comprehensive treatment, can still have local recurrence or metastasis to other organs in the distant future, which can endanger the life and health of patients.