Chronic urticaria is known as addiction rash in Chinese medicine, and is treatable by strengthening the spleen and dispelling dampness (by tonifying the spleen so that dampness can be expelled). Addictive rash is an itchy, allergic skin disease in which red or pale-white masses appear on the skin, appearing and disappearing. It may be related to congenital insufficiency of endowment (bad constitution and functioning of the innate body) and external exposure to wind, heat and cold evils. Strengthening the spleen and dispelling dampness is used to treat skin diseases caused by a weak spleen that cannot transport and transform water and dampness that stagnate internally (water and dampness stay in the body), and can therefore relieve addictive rashes. To strengthen the spleen and dispel dampness, it is necessary to combine diet, cultivate good living habits and medication, etc. In daily life, it is necessary to ensure the intake of proteins, staple foods, vegetables and fruits, to avoid overwork, to quit smoking and drinking, and to avoid living in humid indoor environments for a long time, and it is also possible to strengthen the spleen and dispel dampness through medications such as ginseng-ling-white-jujube-san and xiangsha-luijun-pan, etc., but it is necessary to be aware of those who are allergic to the medication are prohibited. Patients suffering from addictive rashes are advised to seek timely medical treatment, identify the cause of the disease under the guidance of a doctor to standardize the treatment, such as the use of drugs need to comply with the doctor’s instructions, do not use drugs, so as not to aggravate the condition.