Nasal congestion and sticky nasal mucus are mostly considered to be caused by chronic rhinitis, nasal polyps, sinusitis and other diseases. 1. Chronic rhinitis: the etiology of chronic rhinitis is related to infection, immune system disorders, nasal stenosis, malnutrition, long-term inhalation of dust and other factors. Patients will have symptoms such as nasal congestion, runny nose, and foreign body sensation in the throat, which can be manifested as nasal congestion and sticky nasal mucus. 2. Nasal polyps: Nasal polyps may be caused by pathogenic microbial infection, allergy and other factors. Symptoms are nasal congestion, increased secretion, olfactory impairment, etc., and patients may have nasal congestion and thick nasal mucus. 3. Sinusitis: The cause of sinusitis is mainly related to upper respiratory tract infections, nasal structure abnormalities and other factors. Typical symptoms of sinusitis are nasal congestion, pus, headache, loss of sense of smell, etc. Some patients may experience nasal congestion and sticky nasal mucus. There are many reasons for nasal congestion and thick nasal mucus, so it is recommended to go to the hospital in time to clarify the cause of the disease. In daily life, we need to ensure adequate sleep, do not stay up late for a long time.