Hemorrhoids are mostly formed by the tortuous expansion of anal veins, so they do not become cancerous. Blood in the stool is well known as a warning sign of cancer, so many patients with hemorrhoids suspect that they will not become malignant to rectal cancer. There are no reports from home or abroad that hemorrhoids can turn into cancer, and hemorrhoids are not included in the etiology of anorectal cancer. Although hemorrhoids and rectal cancer can co-exist in a single patient. Some families have congenitally weak venous walls, fewer elastic fibers and more collagen fibers in the vessel walls, and the vessels lack elasticity and cannot withstand pressure, so some scholars believe there may be some genetic factor at play in hemorrhoids. a domestic census from 1975 to 1977 found a higher incidence of hemorrhoids in children of parents with anorectal disease, which also fully illustrates this point. However, there is no positive international conclusion on the hereditary nature of hemorrhoids, so further research is needed. As for contagiousness, hemorrhoids do not exist. Some patients believe that they can be infected with hemorrhoids by sitting on the chairs and stools that hemorrhoid patients sit on or on toilets, pits and bidets, which is completely lacking in scientific basis. This is because infectious diseases are diseases that are caused by viruses, bacteria, etc. and spread through air, food and various other contacts, while hemorrhoids are not caused by bacterial or viral infections and are not directly related to viral and bacterial infections in any way.