Painless bleeding from the anus during urination is mostly caused by rectal polyps and internal hemorrhoids, which are common raised lesions in the rectal area and can be classified as inflammatory, proliferative, or tumorigenic. Internal hemorrhoids, on the other hand, are mainly formed due to varicose veins on the surface of the rectal mucosa, and both of these conditions form raised bumps of flesh in the rectum to the dentate line. When the disease progresses, such as hemorrhoids with enlarged nuclei and polyps that increase in size, they will quickly occupy the space in the rectum, and when the pressure in the abdominal cavity rises or the rectal space is squeezed, such as when the patient defecates, coughs, squats, or even urinates, the mucous membrane on the surface of the nuclei and polyps will break due to the pressure, thus causing bleeding symptoms, which are often painless, bright red in color, dripping blood or blood on a tissue. It is recommended to go to the anorectal department for anal finger diagnosis and anoscopy to determine the disease before treatment.