Stagnation of qi and blood stasis is a common clinical phenomenon, stagnation of qi and blood stasis is often due to emotional discomfort, or feel the external evil caused by the following: First, emotional discomfort: some people often long-term depression, or emotional stimulation, more than the ability to regulate the human psyche, so depressed and unhappy, damage to the function of the internal organs, resulting in stagnation of qi, which affects the blood circulation. Second, external evil: some people feel the wind, cold and dampness, these evils block the meridians, can lead to qi and blood stagnation and blockage, the formation of qi stagnation and blood stasis. In addition, qi stagnation and blood stasis can also be seen in, for example, impact injuries, or fall from a height, affecting the operation of qi and blood, resulting in qi stagnation and blood stasis.