Blood stasis, i.e. blood stasis syndrome, its symptoms and manifestations include localized pain, pain like pins and needles and the site is fixed and does not move, aggravated at night, greenish-purple lump on the surface of the body or hard lump in the abdomen, repeated bleeding, greenish-black color, rough and dry skin like scaly skin, purplish tongue or petechiae, etc.. The common causes of internal obstruction of blood stasis are bruises and injuries, invasion by external evils, internal injuries due to emotions and feelings, and weakness due to prolonged illness. Depending on the location of the blood stasis, there are clinical differences, such as stasis in the brain and collaterals, paralytic obstruction of the heart and veins, and blood stasis in the stomach and intestines. Symptoms such as dizziness, headache, insomnia, forgetfulness, palpitation (rapid heartbeat, often accompanied by panic), etc.; symptoms such as stabbing pain in the heart and chest, chest tightness, aggravated at night, or even pain radiating to the back of the shoulders, etc.; gastrointestinal blood stasis is commonly associated with stabbing pain in the abdomen, refusal to press, or palpable lumps, and vomiting of blood in the stools and bowels. If symptoms related to internal obstruction of blood stasis occur, please go to regular hospitals for diagnosis and treatment.