Food does not have a therapeutic effect, and there are no dietary contraindications and preferences for patients with allergic cough, but it is recommended to eat a light diet, avoiding foods high in salt, sugar, spicy and irritating foods, and avoiding foods that can cause allergies. Eat a light diet with plenty of fresh vegetables and fruits, and pay attention to dietary diversity, such as beans, cereals and meat. Avoid eating foods that are high in salt, sugar and spicy stimulants, and avoid drinking alcohol, coffee and strong tea, which may cause respiratory tract irritation and aggravate cough symptoms. In addition, during the onset of the disease, avoid foods that may cause allergies, commonly found in sea fish, shrimp, crab, peanuts, nuts, mangoes, etc. Dietary regulation can not replace medication, it is recommended that patients with allergic cough should seek medical treatment in a timely manner for standardized diagnosis and treatment.