Whether the severity of internal hemorrhoids can be ligated or not generally needs to be decided according to the clinical classification of internal hemorrhoids, usually internal hemorrhoids of degree I, II and III are suitable for ligation surgery. According to the severity of internal hemorrhoids, they can be clinically classified into I, II, III and IV degrees, and internal hemorrhoid ligation surgery is usually suitable for patients with I, II and III degrees. Ligation surgery is to put a special adhesive ring into the root of internal hemorrhoids, and use the elasticity of the ring to make the hemorrhoid nucleus ischemic, necrotic, detachment and healing. For the first degree of internal hemorrhoids through a ligation can complete the treatment, while the second and third degree of internal hemorrhoids usually need 2 to 3 times ligation can complete the treatment. Patients with internal hemorrhoids should not eat too spicy and stimulating food, eat more fresh vegetables, fruits, etc., and drink more water to ensure that the intestinal tract is moist and smooth, in order to prevent constipation. Patients with severe internal hemorrhoids are advised to choose a suitable treatment method under the guidance of a doctor, so as not to delay the condition and cause adverse consequences.