Rectal needle injections are performed as a clinical approach used to treat hemorrhoids. Hemorrhoids are dilated lesions of blood vessels, and the use of certain medications that sclerotize blood vessels for local rectal injections can have side effects. After performing sclerosing injections, the local blood vessels will constrict, and the local blood clots are easily dislodged and transported with the blood vessels to other parts of the body, and embolize to other parts of the body, such as the heart and lungs, which is myocardial infarction and pulmonary embolism. There are serious complications of performing rectal needle injections, resulting in local infections, there is increased pain, bleeding, blood vessel fragility becomes worse, bleeding is not easy to stop. Carrying out rectal needle injection is easy to change the local anatomy, hemorrhoids recur again for surgical treatment, making the operation more difficult, under the indications for treatment.