1.Preparation for extracorporeal shock wave lithotripsy Generally, patients who need extracorporeal shock wave lithotripsy are mostly in the acute phase, with obvious symptoms, increased red blood cells in routine urine examination, and stones in X-ray abdominal plain film. In this case, the patient should be treated with antispasmodic and anti-inflammatory drugs, and then treated with extracorporeal shock wave lithotripsy after the patient’s symptoms are relieved. Before lithotripsy, intravenous pyelogram should be performed to determine the location and size of the stone. The nurse should first do a good job of psychological care for the patient, so that he or she can understand the purpose, basic process and significance of the examination and treatment, and relieve his or her worries, so that he or she can cooperate well with the doctor to complete the entire examination and treatment. 2. Cooperation in extracorporeal shock wave lithotripsy The cooperation in lithotripsy is divided into two stages. One is the cooperation of intravenous pyelogram. Before the imaging, the intestinal tract must be well prepared: generally you can use senna 15g tea, or take other laxatives; at the same time, the patient should do the iodine allergy test, and only after it is judged negative, the patient should be pushed intravenously 60% pantothenic glucosamine, at this time the patient should be placed on the treatment bed. During the drug pushing process, the nurse should closely observe the patient and the changes of vital signs, and ask the patient’s subjective feelings to prevent allergic reactions to the high dose of the drug. The second is the cooperation in lithotripsy. The impact voltage during lithotripsy should be slightly painful to the patient, and the time should be between 30 and 40 minutes. During this time, the nurse should be in a position close to the patient, where it is easy to observe the condition, and observe the vital signs and facial color at all times. Ask the patient’s subjective feelings, give timely treatment, and obtain their better cooperation in order to successfully complete their treatment process. After extracorporeal shock wave lithotripsy treatment, patients may have symptoms such as hematuria and pain, so nurses should pay attention to the changes of patients’ vital signs after the operation. Ask the patient to rest in bed, give antispasmodic, analgesic and anti-inflammatory drugs as prescribed by the doctor, and ask him to drink more water to increase the urine volume, so as to flush the urethra, prevent infection and promote stone discharge; meanwhile, ask the patient to discharge urine into a specific container so as to observe and understand the stone discharge. Patients were also instructed to review regularly to observe the efficacy of treatment.