The sore throat from secondhand smoke is considered to be a result of inhaling toxic substances from secondhand smoke, which can damage the mucous membrane of the throat and lead to pharyngitis and other related symptoms. Clinically, the following treatment can be done: First, it is recommended to leave the environment of secondhand smoke immediately, ventilate and breathe fresh air to minimize the continued stimulation of secondhand smoke. Second, it is recommended that the patient go to an ENT clinic and have the doctor examine the throat for tonsillitis, pharyngeal mucosa congestion, lymphatic follicle hyperplasia in the posterior pharyngeal wall and tongue root, etc. You can apply pharyngolaryngitis tablets, take oral Chinese medicine preparations for pharyngitis, common ones are Blue Scutellaria Oral Liquid, Pudi Blue Anti-inflammatory Oral Liquid, do pharyngeal nebulization and so on for symptomatic treatment. It is recommended that patients eat a light diet, do not eat spicy and stimulating food, drink more water and eat more vegetables and fruits.