Normally, internal hemorrhoids do not cause abdominal pain. If the internal hemorrhoid lesion induces constipation and so on, there may be a small abdominal distension and pain and other discomforts. Internal hemorrhoids is one of the common lesions of anus and intestines, the onset of the site in the anal canal area above the dentate line, the lesion is based on the varicose veins as well as the anal cushion downward displacement. Due to the specificity of the lesion site, after the onset of the patient’s clinical symptoms are mainly in order to blood, anal itching, pain, protruding lumps and other situations, usually does not induce abdominal pain. However, if the internal hemorrhoid lesion is serious, due to the defecation process, may induce anal pain symptoms, the patient fear of defecation, may induce constipation and so on. Fecal matter cannot be discharged smoothly and accumulates in the intestines, which may lead to discomfort such as bloating and pain in the abdomen. Regardless of the situation, when the internal hemorrhoid patients appear small abdominal pain, should go to the hospital anorectal department as soon as possible, clear specific causes and then targeted treatment, to prevent the leakage of diagnosis of the condition occurs.