The swelling of the left bridge of the nose needs to be based on the cause to decide the medication to be taken, the cause may be sinusitis, sinus cysts, nasal bridge injury. 1. Sinusitis: patients with sinusitis due to infections and other reasons, you can take some drugs to clear the nasal cavity, such as cangzhi pills, etc. You can also do routine blood tests, if the white blood cells or neutrophils increased, you can apply antibiotic treatment, such as levofloxacin. 2. Sinus cysts: Sinus cysts can lead to swelling of the left bridge of the nose, which is generally ineffective in drug treatment and requires surgery, which can be done in the ENT department to remove the cysts. 3. Nasal bridge injury: especially patients with a history of trauma, the left side of the bridge of the nose may be distended, can be used locally to activate blood circulation and eliminate blood stasis (to promote blood circulation and eliminate blood stasis) drugs, such as Yunnan Baiyao and so on. The swelling of the left side of the bridge of the nose needs to be treated according to the cause of the disease, you can go to the ear, nose and throat department, standardized diagnosis and treatment under the guidance of professional physicians.