There are many reasons for nasal congestion in the morning, such as common allergic rhinitis, colds, chronic simple rhinitis and so on. 1. Allergic rhinitis: For patients suffering from allergic rhinitis, the sensitivity of the nasal mucosa is high, and when waking up in the morning by the cold air stimulation, dust mite stimulation, etc., there can be a runny nose, nasal congestion and other uncomfortable symptoms. 2. Cold and flu: not doing a good job of keeping warm when sleeping at night, leading to the phenomenon of cold and flu, which can also cause runny nose, nasal congestion, sneezing and other symptoms. 3. Chronic simple rhinitis: chronic simple rhinitis patients, due to long-term stimulation of inflammation, can lead to turbinate enlargement, nasal mucosa congestion and other phenomena, can lead to an increase in nasal secretions, so get up in the morning after the cold air stimulation nasal congestion will be relatively more obvious. The phenomenon of continuous early morning nasal congestion, it is recommended to actively consult a doctor for a systematic examination, to clarify the diagnosis and cause of the disease.