Symptoms of lung qi deficiency are coughing and wheezing, sputum white and sparse, low voice, spontaneous sweating (involuntary sweating during the day, aggravated by sweating with slight movement), easy to catch a cold and so on. Weakness of lung qi is mostly caused by coughing and wheezing due to prolonged illness, depletion of lung qi, or deficiency of spleen, insufficient transportation, insufficient production of water and grain essence, and loss of nourishment for the lungs. The main clinical manifestations are sputum white sparse, self-sweating, easy to catch a cold, pale face, low voice and lazy speech, fatigue, pale tongue, white moss, weak pulse, and so on. Because of the deficiency of lung qi, the lung’s function of declaring and purging is obstructed, then the generation of zongqi is insufficient, and the qi is upwardly reversed, so there is the performance of coughing and wheezing; the lung qi is weak, and the voice is weak, so the voice is low; the lung’s deficiency of fluid dispersal is weak, and it gathers into phlegm, so the phlegm is white and sparse; because of the deficiency of lung qi, it can’t declare and disseminate Weiqi to protect and defend the skin, and the pores of the sweat are easy to be opened and drained, so it is easy to sweat and get colds. If you feel sick, please go to the regular hospital.