Usually, it is best not to drink black tea when you have a sore throat, as it may cause the symptoms to worsen. A sore throat is often associated with bacterial or viral infections, when disease-causing microorganisms invade the body, leading to acute upper respiratory tract infections, manifested as swelling and inflammation of the pharynx, leading to pharyngitis, tonsillitis and other diseases in severe cases. Black tea contains a large amount of theophylline, caffeine and tannic acid, etc., of which caffeine and theophylline have a stimulating effect on the central nervous system, which will make the heartbeat faster and oxygen consumption enhanced, affecting the patient’s rest, and also leading to excessive blood circulation in the brain, increasing fatigue, which leads to prolonged recovery time from sore throat. Tannic acid will affect the sweating function of the body, and when the body temperature gradually rises it will prevent the body from sweating normally, thus affecting the body’s heat dissipation and aggravating the condition. Sore throat should pay attention to drink more warm water, not tea. Eat more fresh vegetables and fruits, and do not eat spicy, cold and raw food. Pay attention to rest, try not to stay up late, and prohibit smoking and alcohol. If the sore throat is not relieved for a long time, you should consult a doctor to check the cause and apply antibiotics for anti-inflammatory treatment if necessary.