Hives can be caused by heat or by cold. Urticaria, also known as hives, is a limited edema reaction. Traditional Chinese Medicine (TCM) practitioners can recognize the symptoms of the patient. They are categorized into wind-cold, wind-heat and toxic-heat types. Wind-heat can cause urticaria, in which the patient manifests as reddish-colored hives with burning and itching sensation, aggravated by heat. Wind-cold can cause urticaria, the patient manifested as reddish masses, conscious itching, aggravated by cold, relieved by heat. Toxic heat can cause urticaria, the patient manifested as bright red, fused into pieces, high fever, irritability and other symptoms. The cause of urticaria is more complex, heat and cold, can lead to patients with the disease. Patients should go to the hospital in time, after clarifying the specific type of evidence, and then carry out the corresponding treatment.