Nasal congestion, which often occurs in allergic rhinitis, sinusitis, nasal deformity, nasal tumors and other diseases, needs to be treated according to the etiology of the cause of nasal congestion and inactivity, and at the same time can be applied for a short period of time to the intra-nasal decongestant such as hydroxymethazoline for symptomatic treatment. 1. Symptomatic treatment. When nasal congestion is particularly serious, short-term use of hydroxymetazoline and other intranasal decongestants to alleviate the symptoms of nasal congestion; can also be applied to nasal dexamethasone and other glucocorticoids for treatment. 2. Treatment of the cause. (1) If caused by allergic rhinitis, local application or oral antihistamine drugs such as loratadine can be used to avoid contact with allergens. (2) If caused by upper respiratory tract infection, generally by drinking more water, pay more attention to rest, can be recovered, generally do not need antiviral treatment. (3) Nasal congestion caused by nose and sinusitis, need to apply antibiotics such as amoxicillin clavulanate potassium and other anti-infective treatment. Delayed or accompanied by other conditions can choose surgical treatment. (4) In addition, caused by nasal deformity diseases such as deviated septum, can be corrected by surgery. Nasal tumors can also cause nasal congestion, and most of them need comprehensive treatment such as surgery, radiotherapy and chemotherapy. When the symptoms of nasal congestion are serious, it is necessary to clarify the cause of the disease under the guidance of the doctor, and carry out treatment according to the cause of the disease. The above drugs should be taken under the guidance of a doctor, avoid self-medication.