After putting in ureteral stent, cloudy urine after walking is usually an abnormal phenomenon, and it is considered to be related to postoperative infection and low water intake and other factors. 1. Post-operative infection: It may be due to the reaction of the body after the stent is put in the body, resulting in bacterial infection, which in turn causes the phenomenon of cloudy urine. Infection usually presents with symptoms such as pain and fever, and can be treated with medicines such as levofloxacin tablets under the guidance of the doctor. 2. Low water intake: It is usually due to the reduction of water intake after the operation, which leads to the formed elements in the urine easily adhering to the wall of the tube, forming crystals, stones and other symptoms, which in turn causes the phenomenon of cloudy urine. Symptoms can usually be relieved by improving diet, consuming foods containing protein and vitamins as appropriate, and drinking more water. In addition, cloudy urine can be caused by bleeding after activity that results in hematuria. If a patient has a ureteral stent tube placed and has cloudy urine after walking, he or she should seek medical attention as soon as possible to determine the cause and avoid adverse consequences.