The term “Atmosphere” was first introduced in “Nei Jing”, and its meaning includes true qi, meridian qi, evil qi and zong qi. Later medical practitioners have also discussed a lot about the atmosphere, among which Zhang Xicun, a modern medical practitioner, has the most detailed discussion. According to him, the atmosphere is the zong qi, which is mainly composed of natural qi and water and grain qi, and lung qi is one of the main components of zong qi. He systematically expounded the characteristics of the generation, circulation and functions of the atmosphere, as well as the clinical symptoms of deficiency of the great qi and even sinking, and created the basic formula DD Shengchi Tang for the treatment of the sinking of the atmosphere, which provided the theoretical basis for later medical practitioners to understand the concept of sinking of the atmosphere, the characteristics of the disease and the clinical treatment. Fang Yutao, Department of Cardiovascular Medicine, Guang’anmen Hospital, Chinese Academy of Traditional Chinese Medicine