One of the main symptoms of hemorrhoids is blood in the stool, so in clinical practice most anorectal surgeons recommend that patients have a colonoscopy before surgery for hemorrhoids, because diseases such as tumors and polyps in the intestines can also cause blood in the stool, and in order to clarify the nature of the bleeding or the source of the bleeding, it is best to have a colonoscopy before surgery to rule out bleeding from other causes in the intestines, so that it does not lead to a missed diagnosis. If you have a hemorrhoid, it is generally advisable to pay attention to your diet, and if the symptoms are not serious, you can control them conservatively. If the symptoms are more severe, and the symptoms are still recurring through conservative treatment, then the hemorrhoids need to be considered for surgery.