Patients exposed to air environment containing formaldehyde pollution may cause sore throat symptoms. The high content of formaldehyde may cause stronger irritation to the mucous membrane of the throat and even the mucous membrane of the nasal cavity, causing pain, dryness, burning and other uncomfortable symptoms in the throat area. Long-term exposure to air pollution can easily cause chronic inflammation in the throat, which can lead to recurrent episodes of throat pain and increase the sensitivity of the throat. Therefore, patients need to pay attention to keep the surrounding air environment clean and pollution-free, pay attention to proper ventilation, avoid exposure to air environment containing polluting substances such as formaldehyde, and take appropriate protective measures when necessary.