The phenomenon of nasal congestion and runny nose is caused by acute rhinitis, chronic rhinitis, allergic rhinitis and other diseases. 1. Acute rhinitis: mostly caused by viral and bacterial infections, acute inflammation of nasal mucosa and submucosa, which can lead to congestion and swelling of the nasal mucosa and increase the amount of mucosal secretion causing nasal congestion and runny nose. 2. Chronic rhinitis: mostly caused by repeated episodes of acute rhinitis and stimulation of adverse physical and chemical factors, resulting in excessive swelling of the nasal mucosa, resulting in narrowing of the nasal passages leading to nasal congestion and increased nasal mucosal secretions leading to symptoms of runny nose. 3. Allergic rhinitis: most of the nasal mucosa contact with allergic substances, triggered by the allergic reaction disease, which can cause a lot of runny nose and nasal congestion, sneezing symptoms. The symptoms of nasal congestion and runny nose, need to actively go to the hospital otolaryngology systematic examination to clarify the diagnosis and cause of the disease, and follow the doctor’s instructions to standardize the treatment.