Cough patients should not eat seafood. Seafood is a cold food and a lot of seasonings are added while making seafood, which turns it into spicy, greasy and irritating food. Eating spicy, greasy, irritating food and raw, cold, hard food for cough patients can aggravate the onset of cough as well as be detrimental to the improvement of the cough and can affect the treatment of the cough. It is best for cough patients to have a light diet and not to eat foods that are too sweet. Sweets can aggravate phlegm, which is not conducive to coughing up phlegm and aggravates phlegm and dampness in the body. Coughing is a common symptom of respiratory diseases. The occurrence of coughing indicates that there is an infection in the respiratory tract, which should be treated with anti-infective drugs in a timely manner. Because coughing is a recurring disease, attention must be paid to the diet, which can shorten the course of the disease and facilitate the treatment. When the cough improves, the normal diet can be resumed and more ventilation is needed in daily life.