There is a big difference between qi deficiency and qi stagnation; qi deficiency is a lack of qi, while qi stagnation is a lack of qi. Specifically, the main differences include causes and symptoms, as well as treatment. 1. Causes and symptoms: (1) Qi deficiency refers to the deficiency of qi, collectively refers to the weakness of positive qi in the internal organs, and is closely related to the lungs, spleen and kidneys. Clinical manifestations are mainly fatigue (mental exhaustion, physical weakness), susceptible to exogenous sensations, spontaneous sweating (involuntary sweating during the day, a little sweat aggravated by movement), a little sweat, etc., and due to the weakness of the positive qi of the different viscera combined with different symptoms; (2) Qi stagnation refers to the lack of smoothness of qi, which can be caused by dietary evils or seven emotional stagnation; it can also be caused by the weakness of qi not transportation. Stagnation of qi with the stagnation of the organs and meridians and the emergence of different symptoms, such as: stagnation of qi in the spleen is reduced gastric intake, fullness and pain; stagnation of qi in the liver is the liver qi crosswise, dystocia (coercive pain in the ribs), easy to anger, and so on. 2.Treatment: (1) Qi deficiency can be treated by taking medicines that replenish Qi, such as astragalus, ginseng, and atractylodes; (2) Qi stagnation can be treated with qi regulating medicines, such as Chen Pi, Qing Pi, and Da Bu Pi. There is a big difference between qi deficiency and qi stagnation, clinical diagnosis and treatment need to be differentiated, specific should be under the guidance of the doctor to identify and treat.