Hemorrhoids include internal hemorrhoids, external hemorrhoids, and mixed hemorrhoids. The distinction between internal and external hemorrhoids lies in the dentate line of the anal canal. The jagged circular line where the skin of the anal canal meets the mucous membrane of the rectum is called the “dentate line”. The dentate line for internal hemorrhoids, line below the general is external hemorrhoids and mixed hemorrhoids. Clinically, internal hemorrhoids are most common, and they probably occur above the dentate line and 3cm from the anus. The main symptoms of internal hemorrhoids include blood in the stool and prolapse. Internal hemorrhoids are accompanied by painless bright red blood, dripping blood, or jet-like bleeding during defecation; and prolapse, depending on the severity of the hemorrhoids, includes no hemorrhoids, hemorrhoids that prolapse and retract on their own, hemorrhoids that prolapse and need to be returned to water, and hemorrhoids that prolapse and are difficult to retract. Clinically, according to the severity of the symptoms of internal hemorrhoids, it is divided into four degrees, including: 1, I degree: blood or dripping blood during stool, bleeding can stop by itself after stool; no hemorrhoidal prolapse; symptoms can be relieved by changing dietary habits or appropriate medication. 2, II degree: blood, dripping blood or jet bleeding; accompanied by hemorrhoidal prolapse, which can be self-retained after stool; generally treated with medication. 3.III degree: blood in stool, accompanied by hemorrhoidal prolapse; hemorrhoidal prolapse during defecation, prolonged standing, coughing, exertion or weight-bearing, which needs to be restored by hand; surgical intervention is needed. 4.IV degree: there may be blood in the stool; hemorrhoids continue to prolapse or prolapse easily after restoration; surgical intervention is required. In addition to the symptoms of blood in stool and prolapse, there are other complications of internal hemorrhoids, including anemia, ingrown hemorrhoids, constipation, anal itching, etc. Anemia and ingrown hemorrhoids are the main complications. Internal hemorrhoid bleeding more, longer, easy to let the patient caused by blood loss anemia; III degree, IV degree of internal hemorrhoid prolapse after not timely retraction, easy to lead to edema, inflammation, resulting in blood reflux obstruction, thrombosis, hemorrhoidal nuclei indicate that necrosis and the formation of hemorrhoidal ingrown, need to be timely surgical treatment.