After performing extracorporeal shock wave lithotripsy, it can cause some complications. For example, kidney injury, hematuria, back pain, etc. 1. When extracorporeal shock wave lithotripsy is performed, if too many stones cause urinary tract obstruction, it will lead to high pressure in the renal pelvis and cause kidney injury. Sometimes even uremic sepsis can occur. The disease tends to progress more quickly, can be secondary to infectious shock or even death, should pay great attention to, and active treatment. 2. Patients may have transient hematuria. No special treatment is needed at this time. 3. If there are too many lithotripsy stones in the body, and then extracorporeal shock wave lithotripsy. This may cause excessive accumulation of stones in the ureter, and the patient may experience back pain, discomfort, and in some cases, secondary infection. Once the above symptoms appear, you should immediately go to the hospital for consultation and treatment.