Cough and sputum in bronchitis are caused by pathogenic microorganisms that irritate blood vessels and bronchial mucosa. If the cough and sputum are relatively small, you can take oral diethylpromazine hydrochloride tablets and dextromethorphan for cough suppression. If there is sputum, the sputum is more and thicker, it is not easy to cough up, stop coughing at the same time recommended to apply Ambroxol tablets, bromhexine tablets, acetylcysteine effervescent tablets for sputum treatment. If you have the condition, you can also carry out nebulization, you can use saline or budesonide to humidify the airway and promote the expulsion of phlegm. Drink plenty of water, eat less spicy and stimulating food, such as onion, ginger, garlic, chili peppers, etc., avoid exposure to irritating odors such as oil and smoke, pay attention to rest, prevent cold, and monitor the change of body temperature.