Lung meridian obstruction is often caused by blood stasis, stagnation of qi, and exogenous sensations. 1. External wind-cold, wind-heat and other causes can lead to lung meridian impassability, which is often manifested as fever, chest tightness, shortness of breath, dyspnea and other symptoms. It is often treated by dispersing wind-cold and promoting the circulation of lung qi. 2. Lung meridian obstruction can also be caused by blood stasis, which is often manifested as pain in the area where the lung meridian circulates. It can be treated by activating blood circulation and removing blood stasis (promoting blood circulation and eliminating blood stasis in the body). 3. Qi stagnation can cause the lung meridians to be blocked, mostly due to emotional fluctuations, liver depression and other reasons. It is necessary to treat the symptoms by dredging the liver and regulating qi (regulating the stagnation of qi in the liver). It is recommended that according to the different conditions, after the identification of symptomatic management.