Cautions before male cystoscopy: 1. 1 day before the examination it is recommended to perform local cleaning, you can use water or ordinary soap for local cleaning of the external genitalia to maintain local cleanliness. 2. Before the examination you need to empty the bladder, during the microscopic examination you can estimate whether there is residual urine in the bladder. 3. If there is an acute infection of the urinary tract, you need to postpone the examination and wait until the infection has healed. The examination can only be performed after the infection has healed. If you have an acute infection of the urinary tract, you need to postpone the test and wait for the infection to heal before the test. If the corresponding results of positive contraindicated to carry out the examination.