Under correct operation, the localized black and purple color of the skin after dialing the fire cans may indicate Qi stagnation and blood stasis (blood stagnation due to poor circulation of Qi) or more severe coldness. 1. Qi stagnation and blood stasis (blood stasis due to poor circulation of qi): The dark purple color of the skin after dialing the fire cans may suggest that the qi and blood are not running smoothly, and the situation of Qi stagnation and blood stasis is more serious. If it is caused by this reason, usually should be based on their own actual situation for appropriate exercise or appropriate dietary adjustments, without relief recommended timely medical care. 2. Heavy cold. Wind cold is heavy people after cupping fire cupping local skin will appear a large black purple, if the mark does not fade for a long time, it means that the cold invasion of the body has been a long time, need to carry out long-term recuperation. In daily life, we should pay attention to keep warm, to prevent wind-cold invasion aggravate the body cold. It is recommended to perform fire cupping under the guidance of a professional doctor to avoid unnecessary damage caused by improper operation. In addition, the black and purple skin after fire cupping often suggests that the body is in a relatively unhealthy state, if accompanied by the corresponding symptoms, it is recommended to consult a doctor in a timely manner.