Cerebral hemorrhage belongs to the category of stroke in Chinese medicine. Leeches, which have a small poison, are usually used after concoction. If the stroke is caused by blood stasis, leeches can be taken under the guidance of a doctor. Leeches have the effect of breaking blood circulation, removing blood stasis and eliminating symptoms. It is mainly used for treating blood stasis and menstrual closure, obstruction in the abdomen (tangible or intangible lumps appearing in the abdomen with distension and pain), bruises and injuries, and pain in the heart and abdomen. Adverse effects of leeches: some patients will have skin rash, itching, nausea, vomiting, abdominal pain, diarrhea, gastrointestinal bleeding or even coma, allergy should not be taken. Weakness and blood deficiency, pregnant women, women during menstruation and those with bleeding tendency are prohibited. The efficacy of a single Chinese medicine is limited, clinically it is necessary to use with other Chinese medicines after identification by a traditional Chinese medicine practitioner.