Chronic urticaria is a disease that often has no known cause. Patients often have a red, swollen and itchy rash on their body, face or limbs from time to time, often getting more itchy and swollen the more they scratch. The number of episodes varies from several times a day to once every few days. Because chronic urticaria treatment is very tricky, so patients must pay more attention in life, prevention is the key. 1, chronic urticaria patients should pay attention to diet and avoid triggers. The onset of urticaria has a relationship with diet, certain foods may be triggers. For example, fish and shrimp seafood, containing artificial coloring, preservatives, yeast and other artificial additives of canned food, preserved 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 intestine for too long, thus producing peptones and peptides and 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. Avoid wind, cold, heat, humidity, dryness, fire and insect poison. Regular life to adapt to changes in the external environment. Drinking alcohol, heat, emotional stress, and exertion can increase vasodilation of the skin and stimulate or aggravate hives. Rubber gloves, hair dyes, fragranced soaps and detergents, chemical fiber and wool clothing, etc. can be a bad stimulus for allergic people or urticaria sufferers 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, to maintain a happy mood, appropriate physical exercise, to enhance physical fitness, which will be very beneficial to the prevention of urticaria. 6, chronic urticaria can be prevented using Chinese herbs. Certain Chinese medicines, such as Shou Wu, Chinese wolfberry, ginseng, astragalus, Ganoderma lucidum, jujube, chasteberry, codonopsis, schisandra, yellow essence, Chinese yam, party ginseng, etc., have a variety of functions such as anti-free radicals, improve immune function, promote metabolism, regulate the nervous system and endocrine system, and have obvious anti-allergic effects.