Patients suffering from kidney stones can take abdominal plain film to determine the size of the stones. Abdominal plain film is for stones above 0.5 cm, which can be clearly seen on the plain film. If there are some non-visible stones, such as uric acid stones, which cannot be seen by taking abdominal plain film, stones smaller than 0.5 cm are difficult to observe on abdominal plain film. It is necessary to perform a urological CT examination to be able to clearly see the specific location and size of the stone, through the urological CT can understand whether the kidney stone causes hydronephrosis and the severity. According to the results of the auxiliary examination can be effective for different patients with kidney stones, choose different treatment methods, can achieve effective therapeutic effect, patients with kidney stones should drink more water, increase the appropriate exercise, help the discharge of stones.