The cause of a cold with no appetite may be related to factors such as fever, decreased sense of smell and congestion and swelling of the gastrointestinal tract caused by a viral infection, which can be relieved by general treatment and medication. Colds are caused by viral infections and can present with symptoms such as cough, phlegm, nasal congestion and fever. Fever can lead to a decrease in the vitality of digestive enzymes in the body, so that the food in the stomach is not easy to digest, and thus have no appetite; nasal congestion caused by swelling of the nasal mucosa can cause smell disorders, resulting in a loss of appetite; the virus can also cause congestion and edema of the gastrointestinal tract, resulting in weakening of the gastrointestinal peristalsis, resulting in a loss of appetite and gastrointestinal symptoms. Conditioning method is under the premise of more rest, drink more water to promote metabolism, diet to light diet. Secondly, if the fever temperature is high, acetaminophen and other drugs can be used to reduce fever; if the nasal congestion is serious, ephedrine drops can be given to improve the symptoms. Lack of appetite can also be caused by other diseases, if the symptoms are not relieved or aggravated, it is recommended to consult a doctor in a timely manner, improve the examination, clarify the cause of the disease, and standardize the treatment under the guidance of the doctor’s examination, so as not to aggravate the condition.