You can drink milk if you have a cold and fever, but it is not recommended for people who are allergic to milk or for those who have gastrointestinal symptoms. The main components of milk are protein and fat, which do not contain ingredients that can aggravate colds. At the same time, milk has more water, which can accelerate the metabolism, thus alleviating the fever symptoms to a certain extent, which is helpful for the recovery of colds. However, if there is a history of milk allergy, it is not recommended to drink milk during a cold, which may aggravate symptoms such as sneezing and coughing. At the same time, if accompanied by diarrhea, vomiting and other gastrointestinal symptoms, it is also not recommended to drink milk, increasing the burden on the stomach and intestines. As long as there are no obvious symptoms of discomfort, you can drink milk normally.