Middle-aged and elderly people who discharge painless carnal hematuria should be alert to the possibility of urinary tract tumors, such as bladder cancer, renal pelvis cancer, kidney cancer, etc. Men can also be prostate hyperplasia or prostate cancer. If it is accompanied by discomfort such as frequent and urgent urination and has a short duration, it may also be an infectious disease such as acute cystitis. If it is accompanied by back pain or abdominal pain, it can be a possible urinary stone. Other diseases that cause carnal hematuria include renal tuberculosis, pyelonephritis, glomerulonephritis, and many others. The picture below shows a patient who was recently treated for early bladder cancer. The mass was not yet detected by ultrasound and CT and other imaging examinations, and after persuasion, cystoscopy was performed and a small mass was found, and the mass and adjacent area were removed by electrodesiccoscopy, so that early detection and treatment could preserve the bladder with good results. If the hematuria is not taken seriously in the early stage and the tumor is too large before seeking medical attention, the bladder cancer that invades the bladder muscle layer and deeper will require a bigger surgery such as partial bladder removal or total cystectomy.