Urticaria, commonly known as “rubella”, is a limited edematous reaction caused by increased vasodilation and permeability of the skin mucosa. It is characterized by the production of porcelain white or light red bumps on the skin with an itching or burning sensation. There are many factors that cause the onset of the disease, but the most common cause is due to the consumption of certain allergenic foods. Therefore, the diet of this disease has an important role in the onset and prognosis (e.g., acute to chronic). The first thing that patients with this disease should know is which foods are allergenic to this disease. Allergenic foods are mainly animal protein foods, the most allergenic are fish, shrimp, crab, milk, cream products, eggs, etc.; followed by plant foods, such as bamboo shoots, spinach, mushrooms, mushrooms, eggplant, fava beans, cucumbers, garlic, scallions, citrus, plums, strawberries, and nuts such as chestnuts, white fruits, walnuts, peanuts, etc.. There are also foods that can cause allergies in some people, such as wine, chocolate and acrolein (a substance produced when digesting fats and eating fried foods), as well as colors, flavorings and preservatives added to foods, natural or synthetic substances in foods such as yeast, salicylic acid and citric acid, and foods with mint added such as peppermint candy nuts, peppermint cigarettes or pastry foods. According to Chinese medicine, this disease is “wind” (such as the onset of acute, also refers to allergic, etc.), blood heat, evil poison caused. The above-mentioned foods can generate wind and blood heat, especially seafood, pork, rooster head, pumpkin, mushroom, mushroom, toon and other hairy products, as well as spicy, oily food, eating will generate phlegm and fire, dissipating Qi and blood. Anyone who is identified as yang or hot should strictly refrain from eating. The patient with urticaria should also distinguish between acute and chronic urticaria when it comes to avoiding food. Acute onset is rapid, the disease is heavy heat, but a few days to about two weeks that can stop and heal, that is, like the “wind” to come and go quickly; chronic is repeatedly up and down, often delayed for weeks, months or even years do not heal. Therefore, where the acute attack, the cause is not yet clear, some foods should be absolutely contraindicated, especially fish such as yellowtail, scallop, eel, carp, cuttlefish, octopus; shellfish such as shrimp, crab, oyster, sea clam, ark, razor clam, snapper; meat such as chicken, goose, sheep, cattle, pork and mushrooms, mushrooms, onions, leeks, chili peppers, cucumber, cucumber, kimchi, strawberries, white fruit, chestnuts, peanut butter. Wine and condiments such as vinegar, pepper, peppercorns, star anise, etc. It is difficult to determine the allergenicity of the food eaten for chronic urticaria because some foods, such as milk, cream, barley, buckwheat, corn, beef, potatoes, fava beans, etc., tend to have a delayed reaction only 24 hours after eating. Therefore, the final method of deciding to avoid food is the food exclusion method, i.e. only light and infrequently allergenic foods are allowed to be eaten, and then one by one the above mentioned allergenic foods are added, the reaction is observed, a certain or certain allergenic food is identified, and then strictly avoided. However, there are some foods that are considered by Chinese medicine to be allergenic, such as hairy foods, seafood, spicy foods, which should be avoided in both acute and chronic patients. In addition, all patients with intestinal urticaria, in addition to the above taboos, during the onset of the disease should also be strictly avoid rough, indigestible food, such as fried, fried, smoked and baked and vegetables containing more fiber such as leeks, parsley, bamboo shoots, pickles, etc., otherwise, easy to damage the gastrointestinal mucosa.