If acute pharyngitis is caused by viral or bacterial infection, the pathogen is usually contagious. It is not contagious if it is caused by physicochemical factors, exposure to sensitizing substances, etc. If acute pharyngitis is caused by viral infections such as adenovirus, parainfluenza virus, and bacterial infections such as streptococcus and staphylococcus, the pathogen is usually contagious through droplets and close contact. However, it is usually not contagious to those who are sick due to physical or chemical factors or contact with allergic substances. For acute pharyngitis caused by viral infection, antiviral drugs such as acyclovir and ganciclovir can be used as prescribed by the doctor. Bacterial infections can be treated with antibiotics such as penicillin and erythromycin. Local lesions can also be used 1% to 3% iodine glycerin, 2% silver nitrate coating, in order to achieve anti-inflammatory effect. It is recommended that people with acute pharyngitis follow the doctor’s instructions to use medication to alleviate the discomfort and promote the body to restore health. During the period of illness, pay attention to drink a lot of water to ensure that the throat is moist, create a good living environment, and avoid the intake of spicy and irritating food.