Protein powder is made from soy protein, whey protein, whey, and lecithin. Whey protein, which is one of the main ingredients, contains sufficient methionine to correct essential amino acids in the body. Patients are allowed to take protein powder during the cold. Protein powder is good for absorption and digestion in the stomach and intestinal tract, which is very helpful for early recovery from the cold. During the period of cold, it is advisable for the patient to have a light diet and eat easily digestible food, such as white porridge, thin rice, noodles and vegetable soup, which are commonly eaten in life. Patients can eat more fresh vegetables and fruits during the cold to meet the body’s requirement for vitamin C, and also facilitate the recovery from the cold. Patients must pay attention to rest during the cold and not to engage in strenuous activities and sports, so as to avoid fatigue symptoms in the body, which is very detrimental to the recovery from the cold.