Nasal congestion is a common clinical symptom, and most of the symptoms of nasal congestion are considered to be lung diseases, such as exogenous evil or lung qi deficiency, etc. According to Chinese medicine theory, “the nose is the orifice of the lungs”. Chinese medicine theory that “the nose for the lungs”, that is, the nose is the gas in and out of the channel, and the lungs are directly connected, it can be seen that the lung function is normal, the nose can breathe smoothly, the sense of smell is sensitive; on the contrary, there is nasal congestion and runny nose, sense of smell malfunction and other manifestations. 1. Sudden changes in climate, the evil attack on the human body, resulting in the lungs not smooth will be nasal congestion. Wind-cold injuries are mostly manifested as nasal congestion and runny nose, fear of cold, etc., the treatment is appropriate to use the method of wind dispersal of cold, can be used to improve the symptoms of Jing defense particles, wind-heat colds should not be used, severe hypertension, diabetes and pregnant women should be used with caution. 2. Nasal congestion caused by wind-heat invasion is often accompanied by yellow sticky nasal mucus, sore throat, the treatment should be used to clear the wind and heat, available sangju yinjiaosan, wind-cold cold should not be used. Lung qi deficiency is easy to be damaged by the external evil, can be manifested as weakness, shortness of breath, easy to fatigue, easy to catch a cold, speak in a low voice, etc., the treatment is appropriate to tonify the lungs, can be used for treatment of Yupingfeng granules, pregnant women and children should be used under the guidance of a professional doctor. It should be noted that it is difficult to accurately diagnose the disease only based on individual symptoms. It is recommended to use the four diagnostic methods (looking, smelling, questioning and cutting) of a professional doctor to make a clear diagnosis before proceeding to the next step of treatment.