The most common causes of sore throat and cough with phlegm are induced by cold and flu, prolonged consumption of spicy and irritating foods, excessively cold and hot foods, heavy smoking and alcohol consumption, and fatigue. The main causes are acute pharyngitis, acute tonsillitis, peri-tonsillitis, peri-tonsillar abscess, and acute epiglottitis. It can usually be treated by medication first. If there is no drug allergy, you can take oral amoxicillin and busulfan oral solution. If there is no significant improvement after taking them for 3 days, you need to go to the hospital to see a doctor for detailed examination; if there is improvement, continue to take them, and the general course of treatment is about 1 week. The usual diet should be light, prohibit spicy and stimulating food, too cold and too hot food, also pay attention to prohibit smoking and alcohol, pay attention to keep warm, avoid cold and cold.