Respiratory diseases are the most common diseases in China, and their prevalence is gradually increasing, seriously endangering public health. TCM dialectics are mainly related to the lungs and spleen, the lungs are "the main qi and breathing", the spleen is "the main movement", "the spleen is the source of phlegm", "the lung is the organ of phlegm storage", and the clinical treatment is often treated with "phlegm drinking" and "qi machine". Erchen soup was first seen in the Northern Song Dynasty's "Taiping Huimin and Pharmacy Bureau Fang", which is composed of banxia, orange red, white poria, licorice, ginger, and plum 6 flavored medicines, which have the power of drying and humidifying phlegm, rationalizing qi and neutralizing, and are the basis for treating all phlegm and dampness. Clinical studies have shown that the addition and reduction of prescription drugs to Erchen Tang, or in combination with other prescriptions, or in combination with conventional treatment of Western medicine, has a significant effect in the treatment of chronic obstructive pulmonary disease, lung cancer, chronic bronchitis, pneumonia, bronchial asthma, cough variant asthma and post-infectious cough and other respiratory diseases, and can effectively improve the symptoms and signs of the disease, shorten the course of the disease, and reduce the recurrence rate. This paper summarizes the relevant research progress in treating respiratory diseases in the past five years. It conducts a systematic review of Erchen Tang's prescription solution, pharmacological effects, clinical application, and pharmacological research, to provide a reference for clinical practice and further research.

Mengkai Zhao, An Wang, Peng Liu, Meng Li. Research Progress on Erchen Decoction in Treatment of Respiratory Diseases. International Journal of Frontiers in Medicine (2023), Vol. 5, Issue 12: 69-75. https://doi.org/10.25236/IJFM.2023.051210.

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