Fish can be eaten in moderation during a cough. Fish has a high protein content and is also rich in vitamin A, vitamin D, calcium, iron, phosphorus, potassium and other nutrients, and is characterized by tender meat and low fat, which is beneficial for improving the immune system. So you can eat fish during a cough, but in moderation, to avoid burdening the gastrointestinal tract with large amounts of fish. If the cough is allergic and the patient is allergic, then it is best not to eat fish, otherwise it will easily induce an allergic reaction, thus aggravating the symptoms of cough.