1, chronic urticaria patients should pay attention to diet and avoid triggering factors. The onset of urticaria has a certain relationship with diet, and certain foods may be triggers. For example, fish and shrimp seafood, canned food containing artificial coloring, preservatives, yeast and other artificial additives, pickled foods, beverages, etc. can induce urticaria. 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 intestines for too long, thus producing peptones and peptides, increasing the chances of human allergies. 2, chronic urticaria patients should pay attention to hygiene and avoid adverse stimuli. People with a history of urticaria should pay attention to maintaining cleanliness and hygiene indoors and outdoors, and keep fewer pets like cats and dogs at home. Avoid inhaling pollen, dust, etc. Wind, cold, heat, humidity, dryness, fire and 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. can 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 should pay attention to keeping warm in winter. 3, 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 and analgesic agents, etc. 4, 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 hives, such as infectious diseases: parasitic infections like intestinal roundworms, pinworms, etc.; bacterial infections like dental caries, alveolar abscess, 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. 5, chronic urticaria patients should maintain a healthy state of mind and improve physical resistance. The onset and aggravation of chronic urticaria is related to a person’s emotional or psychological stress. Therefore, maintain a happy mood, appropriate physical exercise, and enhance physical fitness, which will be very beneficial to the prevention of urticaria.