Internal hemorrhoid ligation is a common procedure for treating hemorrhoids, forcing the hemorrhoids to break through by applying a ligature to the internal hemorrhoid area. Post-operative constipation can be caused by pain and poor diet. After internal hemorrhoid ligation due to the surgical wound is not completely healed, in defecation caused by pain, so will deliberately reduce the number of bowel movements, resulting in constipation, this situation will gradually disappear with time, if the pain will be more obvious at the beginning, can be given by oral pain medication such as ibuprofen, acetaminophen extended-release tablets to give pain relief, Kesler squeezed into the anus to promote defecation. After internal hemorrhoid ligation may be due to diet too refined, vegetables and fruits do not eat much, resulting in dry stools, defecation difficulties, the formation of constipation. It is recommended that patients eat more fresh fruits and vegetables, drink more water, do not eat spicy and stimulating food, but also through the lactulose oral solution to promote defecation, relieve constipation. Patients after internal hemorrhoid ligation should live a regular life, keep bowel movement, but also frequently wash the anus to maintain hygiene and cleanliness. If there is any discomfort, they should consult a doctor in time and carry out standardized treatment under the doctor’s guidance.