Blood stasis is generally referred to as blood stasis syndrome, which is manifested by a purplish and dark tongue with purple dots and spots, and varicose veins under the tongue. In addition to tongue symptoms, blood stasis symptoms also include blue lips and nails, or sallow face, or silky red strands on the skin, or skin nails wrong (rough and dry skin, like the appearance of dry fish scales and nails interlacing), or belly exposed tendons, or subcutaneous purple spots, pulse knot, generation or astringency and other manifestations. Chinese medicine believes that blood does not flow well, stagnation in the veins or stagnation in the internal organs of the blood without physiological function; or leave the meridians, failed to dissipate in time or discharged and stayed somewhere in the body of the blood, are stasis of blood. There are many reasons for the formation of blood stasis, such as trauma, fall, stagnation of qi, cold condensation, heat congestion, etc. The main treatment is to activate blood circulation and eliminate blood stasis. The main treatment is to activate blood circulation and remove blood stasis. Depending on the combination of symptoms, it can be combined with other treatments such as moving qi, clearing heat, resolving phlegm and stopping bleeding. If there are tongue signs and other manifestations related to blood stasis, it is recommended to go to the hospital in time, and the specific identification of medication should be under the guidance of the Chinese medicine practitioner, and should not be taken blindly.