There is a folk saying that “spring is the season when all the grasses return to bud and all diseases are easy to develop”. From March to May every year, it is the season of hives, peach fungus, allergic rhinitis, conjunctivitis and other allergic diseases, the public should pay more attention to the problem of spring allergies. It is understood that at this time of the year, many people are troubled by “urticaria”, which is a sudden appearance of light red wind clusters on the skin surface of human limbs or trunk, with itching or burning sensation, which may appear and disappear at times and leave no trace after fading. Dr. Liu Haiping of Boai Hospital’s Department of Dermatology said that this is mainly due to people’s exposure to certain allergenic substances or taking certain drugs, followed by sudden changes in the weather, both hot and cold, are also allergenic factors. Throughout the year, the UV content in the sunlight is the lowest in winter, while in spring, the UV content in the air increases. During the winter, the human body has adapted to the low UV environment. In spring, the human body’s sensitivity to UV rays also increases, and the epidermal cells of the skin are more susceptible to UV rays than in winter, resulting in degeneration and decomposition, causing the skin capillaries to expand and become congested, resulting in erythema, papules and allergies, which is known as “peach fungus”. According to the doctor, it occurs in April and May every year when the spring flowers are in bloom, mainly in women, and the symptoms are sometimes red blood on the skin of the face, sometimes red spots with rice-sized papules and mild flaking. The rash usually disappears on its own as the weather warms up, and some may leave pigmentation. Some people feel itchy in the nose and sneeze in the spring, due to the irritation of pollen spread in the air by the blooming flowers. Doctors call this phenomenon allergic rhinitis, and people who develop allergic rhinitis are individuals with allergic constitution. There are also some people who do not have itchy noses, but their eyes are oddly itchy, accompanied by a mild foreign body sensation and redness of the white eyeballs (i.e., conjunctival congestion). After several years of repeated attacks, the symptoms will gradually worsen, and in addition to unbearable itching and conjunctival congestion, they are accompanied by photophobia, burning sensation in the eyes, redness and swelling of the eyelids, mucus-like secretions appearing from time to time at the lid margins, and both eyes appearing listless and filthy, which doctors describe as typical symptoms of spring conjunctivitis. So how to prevent allergies? Prevention should be more important than treatment. It should start from paying attention to life, proper diet and proper physical exercise. First of all, in early spring, the temperature is still cold, and under the stimulation of cold air, the thyroid gland is hyperactive and consumes calories, which makes the body’s endurance and resistance weakened. Therefore, the diet is still based on high calories, in addition to eating more bean products, but also glutinous rice products, soybeans, sesame flour, peanuts, walnuts and other foods, but also to increase the supplementation of high-quality protein, such as eggs, shrimp, fish, beef and other foods, these foods are rich in amino acids, with the effect of increasing the body’s ability to withstand cold. In addition, to take enough multivitamins and minerals, such as vitamin D has antiviral ability, rich in vitamin D foods such as cabbage, tomato vegetables and citrus, lemon and other fruits; and vitamin A can protect and enhance the function of the mucous membrane of the upper respiratory tract and respiratory epithelial cells, so as to resist the attack of various disease-causing factors. Foods rich in vitamin A include carrots, etc. Vitamin E has the function of improving the immunity of the body and enhancing the ability to resist diseases. Foods rich in vitamin E include cabbage, cauliflower and sesame. In addition, black fungus and mushrooms are also indispensable foods. Then there is the need to have proper outdoor activities to improve the body’s ability to fight diseases, which is beneficial to the prevention of spring allergies.