It is not recommended to eat fish during a cough. According to Chinese medicine, fish produces fire and meat produces phlegm, so if you eat fish, you will aggravate the fire, which will lead to increased inflammation of the respiratory tract and thus aggravate the cough. In addition, fish is a hairy substance, which can aggravate coughs from either cause. The protein content of fish is relatively high, which can increase the burden on the gastrointestinal tract. During a cough, the body’s overall function decreases and the digestive capacity of the gastrointestinal tract is weakened, and the secretion of digestive enzymes decreases. If you eat too much protein, there is no way for the body to digest and absorb and decompose it, which will also increase the burden on the gastrointestinal tract and cause gastrointestinal discomfort. Many of the proteins in fish can cause allergies, and many patients with allergies are not recommended to eat fish at this time. If an allergic condition occurs, it can lead to an aggravation of the cough and possibly an allergic cough, which is very dangerous, so it is better not to eat fish with a cough.