It is advisable not to eat food that is too sweet during a cough. 1. If you eat foods that are too sweet during a cough, such as candies, chocolates, cookies, cakes, etc., they may cause some irritation to the throat, trachea and bronchial tubes, leading to aggravation of the symptoms of coughing. 2. During the coughing period, you should pay attention to develop good dietary habits, and do not eat foods that are too sweet, too salty, too spicy, or too greasy. You should maintain a light diet and eat more fresh fruits and vegetables every day. If the cough symptoms fail to improve or even gradually worsen, you need to consult a regular hospital in time, cooperate with the doctor to improve the examination and standardized treatment.