There is a relationship between the onset of urticaria and diet, and certain foods may be triggers. For example, fish, shrimp and seafood, canned food, preservatives, yeast and other artificial additives, pickled foods and beverages can induce hives. In addition, too sour and spicy and other irritating foods can also reduce the digestive function of the gastrointestinal tract, so that food residues remain in the intestine for too long, thus producing peptones and peptides and increasing the chances of human allergies. 1, chronic urticaria patients should pay attention to hygiene, avoid adverse stimuli People with a history of urticaria, pay attention to keep the cleanliness of indoor and outdoor hygiene, the home should have fewer cats, dogs and other pets. Avoid inhaling pollen, dust, etc. Wind, cold, heat, humidity, dryness, fire, insects and poison can also lead to urticaria, which is one of the six toxic and special evils in Chinese medicine. Live a regular life to adapt to changes in the external environment. Drinking alcohol, heat, and emotional excitement can aggravate skin vasodilation and stimulate or aggravate urticaria. Rubber gloves, hair dyes, fragranced soaps and detergents, chemical fiber and woolen clothing, etc., may become undesirable stimuli for people with allergies or urticaria and should be avoided. People suffering from cold urticaria should not go to seawater baths or take cold baths, and pay attention to keeping warm in winter; 2. Chronic urticaria patients should pay attention to allergies caused by drug factors In the clinic, some drugs can cause urticaria, such as penicillin, tetracycline, chloramphenicol, streptomycin, sulfonamides, polymyxin and other antibiotics, anandamide, aspirin and other antipyretic analgesics, etc.; 3. Chronic urticaria patients should Actively treat the original disease urticaria is both an independent disease and may also be a skin manifestation of certain diseases. There are many diseases that can cause urticaria, such as infectious diseases: parasitic infections like intestinal roundworms, pinworms, etc.; bacterial infections like dental caries, alveolar abscesses, tonsillitis, otitis media, sinusitis, etc.; viral infections like hepatitis B; fungal infections like ringworm, etc. In addition, diabetes, hyperthyroidism, menstrual disorders, and even potential tumors in the body may cause urticaria; 4, chronic urticaria patients should maintain a healthy state of mind and improve physical resistance The onset and aggravation of chronic urticaria has a certain relationship with the person’s emotional or psychological stress. Therefore, to maintain a happy mood, appropriate physical exercise, to enhance physical fitness, which will be very beneficial to the prevention of urticaria.