Hemorrhoids are soft venous masses formed by the flexion and dilation of the hemorrhoidal plexus under the skin of the anal canal, the mucous membrane at the end of the rectum. It is a common and frequent disease occurring inside and outside the anus, and can develop at any age, with 20 to 40 years old being the most common. Common symptoms of hemorrhoids: constipation, blood in the stool, triad of anal fissures, severe pain, itching, inflammatory external hemorrhoids, feeling of distention, prolapse of hemorrhoids, etc. Differential diagnosis: Based on the typical symptoms of internal hemorrhoids and anal examination, the diagnosis is generally not difficult, but it needs to be differentiated from the following diseases. The main reason for misdiagnosis is that the diagnosis is made only on the basis of blood in the stool, without rectal examination and anoscopy, and the blood in the stool of rectal cancer is mostly accompanied by mucus and is dark red, while the blood in the stool of hemorrhoids is bright red; rectal examination can reveal uneven swellings with ulcers on the surface, and the intestinal cavity is often narrow, and the finger stains are often dark red. The diagnosis of rectal cancer should not be delayed by the diagnosis of hemorrhoids. 2, rectal polyps: low rectal polyps with tips, if prolapsed outside the anus sometimes misdiagnosed as prolapsed hemorrhoids, but polyps are mostly seen in children, round, substantial, with tips, movable masses, easy to distinguish under rectal diagnosis or anoscopy. 3.Anal rectal prolapse: sometimes misdiagnosed as circumferential hemorrhoids, but the mucosa of rectal prolapse is circular, the surface is smooth, and the sphincter is relaxed during rectal palpation; the mucosa of circumferential hemorrhoids is plum petal-like, and the sphincter is not relaxed. 4.Anal papilla hypertrophy: located on the dentate line, often conical or with a tip, hard, being to the anal canal epithelium, gray-white, infrequent bleeding.