There are many sclerosing agents for internal hemorrhoids, commonly including phenol vegetable oil, sodium cod liver oil acid, quinine hydrochloride urea water and so on. Internal hemorrhoid injection therapy commonly used injections are many, commonly including phenol vegetable oil, 5% cod liver oil acid sodium, 5% hydrochloric acid quinine urea water, 4% alum aqueous solution and some by the qualified and certified Chinese medicine preparations. However, the use of corrosive drugs is contraindicated. Internal hemorrhoid injection therapy is the use of sclerosing agent to make hemorrhoids and hemorrhoids around the block to produce aseptic inflammatory reaction, so that the submucosal tissue fibrosis, resulting in hemorrhoids shrinkage in order to achieve the therapeutic effect. The treatment should avoid injecting the sclerosing agent into the mucous membrane layer and causing mucous membrane necrosis. Some serious patients can be injected in several times. It is recommended that patients with internal hemorrhoids should consult a doctor in time for diagnosis and treatment when symptoms become obvious. Specific choice of sclerosing agent should be based on their own condition under the guidance of a professional doctor. Follow the doctor’s instructions.