This is incorrect because hemorrhoids are not caused by bacteria or viruses, but by various causes of stasis, dilation and flexion of the hemorrhoidal plexus under the mucosa of the rectum and the skin of the anal canal to form a soft venous mass or pathological hypertrophy of the anal cushion, which is not directly related to viral or bacterial infections. Myth 2: Hemorrhoids can become cancerous Hemorrhoids are benign lesions and are generally not cancerous. It is worth being alert to the fact that some hemorrhoid patients are combined with anorectal cancer, and it is common for doctors and patients to overlook the latter lesion in clinical practice, losing the opportunity for early treatment. Remind hemorrhoid patients to go to regular hospitals for anal finger examination and colonoscopy to rule out other lesions when necessary. The actual fact is that you can find a lot of hemorrhoid treatment advertisements on the street in recent years, and even in some newspapers and magazines, which are “painless, no complications, no sequelae, do immediately go home”. In fact, most of the treatments proposed in these advertisements are methods that have been clinically eliminated long ago, or are crowned with new terms to attract some of the patients who lack medical common sense. The problem is greater, and it can be fatal. The laser also has a disadvantage, the light point is too large, one can accidentally destroy the reserved skin bridge, easy to cause anal stenosis. In summary, laser hemorrhoids, easy to bleed, the wound is difficult to heal, after healing, easy to cause anal stenosis.