瘀血证为离经之血停积体内，脏腑经络血行不畅，或血液外溢产生瘀积，从而影响气血运行的各种临床表现，瘀血是病理产物，又可成为致病因素。一般而言，外伤瘀血可成为致病因素，内伤瘀血为病理产物，又可成为新的致病因素。血瘀证的辨证要点为：痛如针刺，痛有定处，痛而拒按 The blood stasis syndrome is the body of the blood from the menstrual flow, the blood circulation of the organs and meridians is not smooth, or the blood spills produce hoarding, thereby affecting the various clinical manifestations of blood running. Blood stasis is a pathological product and can also become a pathogenic factor. In general, traumatic bleeding can be a causative factor, and internal bleeding can be a pathological product. It can also become a new pathogenic factor. The main points of syndrome differentiation of blood stasis syndrome are: pain such as acupuncture, pain, pain, and pain.