Leeches alone do not open the cerebral blood vessels, but leeches can assist in the treatment of cerebral blood vessel blockage. Leeches are also known as leeches, their medicinal properties are salty, bitter, flat, poisonous, and attributed to the liver meridian. Leeches have the effect of breaking blood stasis and removing blood stasis, clearing the meridians and eliminating symptoms, mainly used for the treatment of blood stasis and amenorrhea, obstruction in the abdomen and lumps (abdominal masses) and other diseases, but it should be prohibited for people who are weak in blood and have a deficiency of blood, menstruating women, pregnant women and other people. Therefore, cerebrovascular blockage can follow the doctor’s instructions to use leeches to assist in the treatment of the disease, but leeches alone can not achieve the purpose of the cure, cerebrovascular blockage patients should also be treated for the primary causes of the disease (such as hypertension, diabetes mellitus, etc.), and follow the doctor’s instructions for the use of Western medicine, to carry out the treatment. If the drug treatment is ineffective or the phenomenon of cerebral infarction, it is necessary to carry out timely surgical treatment (e.g. mechanical thrombus extraction, vascular stenting, cranial decompression surgery, etc.). It is recommended that patients go to the hospital in time, follow the doctor’s instructions to standardize the treatment, and avoid blindly using drugs.