There is always phlegm in the throat when you get up in the morning, and the common causes include: chronic pharyngitis, post-nasal drip syndrome, bronchitis, etc. 1. Chronic pharyngitis: due to long-term inflammation of the pharyngeal mucosa stimulation, resulting in pharyngeal mucosal thickening, lymphoid follicle hyperplasia, while the thickened mucosa will secrete viscous secretions, which will accumulate in the pharynx and throat at night, so that you can feel the phenomenon of phlegm in the throat after getting up in the morning. 2. Postnasal drip syndrome: For example, chronic rhinitis, sinusitis, usually with nasal congestion, runny nose, sneezing and other uncomfortable symptoms. At night, when you sleep and lie down, a small amount of nasal mucus will slowly flow backward into the throat, which will lead to coughing and always have phlegm when you get up in the morning. 3. Bronchitis: a non-specific inflammation of the bronchial mucosa and its surrounding tissues, due to the stimulation of inflammatory mediators, can lead to bronchial mucosa congestion, increased secretions, more secretions gathered in the lumen of the throat at night when you sleep, which in turn causes the morning get up with phlegm in the throat, cough. The morning wake up always have phlegm in the throat, there may be gastroesophageal reflux caused, it is recommended to actively seek medical attention, systematic examination to clarify the cause of the disease, targeted treatment.