Urticaria is commonly known as “ghost rice”, “wind pimples”, “rubella”, etc., and in Chinese medicine it is called “hidden rash”. It is a limited temporary edema formed by the dilation and exudation of small blood vessels in the mucous membrane of the skin, which in turn compresses the surrounding tissue. The disease is very common, with more than 20% of the population experiencing hives at least once in their lifetime. The best treatment for urticaria is to identify and eliminate the cause and the trigger; urticaria is easy to diagnose but difficult to identify the cause, and more than 80% of patients with chronic urticaria do not find the cause. In view of this, patients with urticaria need to pay attention to the following points: 1. First, from the patient’s own diet and living environment and other specific circumstances, actively looking for the cause of the disease, and keep a daily record. Such as eating sea fish, shrimp and crab, longer storage of meat products, recent medication history, history of bacterial, viral and parasitic infections, seasonal changes, mental stress, history of mosquito bites, etc. Self-adjustment through dietary diary method. 2, the onset of the appropriate “taboo”. Daily diet should be light and easy to digest. Avoid tobacco, alcohol, seafood, spicy and sour food, cold, hard oil, and spoiled food, and pay attention to whether there are any abnormal symptoms in the body; wait for the condition to gradually stabilize before resuming the previous diet. Once a food is considered to cause hives, it should be put on the “black list” and should not be consumed next time. 3, common foods that can cause hives are: seafood such as sea fish, shrimp, crab, shellfish, oysters, eggs, milk, cheese, chocolate, mangoes, bananas, strawberries, tomatoes, lychees, peaches, and dried fruits such as walnuts, almonds, hazelnuts, etc. 4.When you have a history of penicillin allergy or hives due to penicillin injection, you should avoid using dairy products because some of them may be contaminated by penicillin. 5, some urticaria patients can not tolerate aspirin, non-steroidal anti-inflammatory drugs, azo dyes, as well as preservatives, food additives, etc., may be arachidonic acid-mediated urticaria. 6, certain contacts such as topical drugs, animals, plants, paints, industrial compounds, etc. can also cause or aggravate urticaria. 7.Some patients may be allergic to fungi and should avoid eating fungal fermented foods such as mushrooms, cheese, cream, vinegar, beer, mayonnaise, etc. Also take oral mycoplasma to kill Candida albicans in the gastrointestinal tract and remove possible fungal allergens. 8.If a female patient has severe persistent chronic urticaria, attention should be paid to laboratory tests for blood sedimentation, thyroid function, autoantibodies, etc., to exclude associated diseases. 9.If the rash lasts for 24 to 72 hours, accompanied by obvious burning, pain and light itching; or if the rash appears purpuric, scaly and pigmented, consider whether it is urticarial vasculitis, pay attention to the blood sedimentation, complement, and see if there is fever, joint pain and other symptoms. 10, when taking anti-allergy drugs to follow the doctor’s instructions, carefully read the drug instructions, see whether there are drowsiness, dizziness and other adverse reactions; see whether there is driving, climbing, operating machinery and other special tips. When you encounter symptoms such as cold and fever, abdominal pain, more consultation with doctors, medication especially careful, careful use of antibiotics. 11.Chew slowly, do not crave food, drink more water, and keep your bowels open. 12. Vaccinations should not be given during an attack. 13.The symptoms of urticaria are complex and changeable, there is a sudden exacerbation of the symptoms during the process of improvement, and there is also the possibility of re-emergence after healing; there is also the possibility of facial redness, nausea and vomiting, abdominal pain and diarrhea, chest tightness and shortness of breath, or even respiratory distress or asphyxia, in addition to skin erythema, which must be sought immediately once it occurs. 14, the first recovery from a serious illness, the body is in the adjustment and recovery phase, immunity is low, to rest, pay attention to the combination of work and rest, should not be strenuous physical exercise, and should not go to the crowded and noisy public places.