Hemorrhoids do not cause urinary tract infections. Because hemorrhoids itself is not an infectious disease, it itself is not easy to cause infection, much less increase the chance of urinary tract infection. Hemorrhoids are caused by long-term bad habits, resulting in the veins around the anus tortuous, dilated, producing soft venous masses, manifested as internal hemorrhoids, external hemorrhoids and mixed hemorrhoids. The main symptom of internal hemorrhoids is painless bleeding, and later aggravation will be manifested as a mass prolapse. External hemorrhoids are mainly painful, because the skin of external hemorrhoids is more sensitive. If the skin edema occurs, it will lead to pain and swelling of the anal skin. The fusion of internal and external hemorrhoids in the same location is called mixed hemorrhoids, which has the symptoms of both internal and external hemorrhoids.