Bladder wall less than smooth is an abnormal result shown during imaging examination such as ultrasound or CT. Usually, the bladder wall should be smooth, which may be related to incomplete bladder filling, cystitis, bladder tumor and so on. Patients are advised to clarify the cause of the disease in time and treat the cause. 1. Incomplete filling of the bladder: Before the test, the patient does not drink enough water, and the bladder does not store enough urine, resulting in the bladder appearing not smooth and wrinkled, and the test result of incomplete filling of the bladder may occur. 2. Cystitis: Patients suffering from cystitis, due to the stimulation of inflammation, the bladder appears not smooth, rough and so on, resulting in incomplete filling of the bladder test results. 3. Bladder tumor: the appearance of tumors in the bladder, resulting in the examination of the bladder wall found to be uneven, raised and so on, resulting in the appearance of incomplete filling of the bladder test results. There are many reasons why the bladder wall is not smooth, so it is suggested that patients can improve the relevant examinations to clarify the causes and treat them actively.