The nature of Cold Evil is cold, condensation and collection. The pathogenic characteristics of cold evil are the related symptoms that cause the human body to appear, for example, the patient will have damaged yang qi and manifest as fear of cold, body heat, no sweat and so on. If the Cold Evil is present in the internal organs, it will be manifested as vomiting, diarrhea, unformed stools, and a cold, painful stomach. Cold in the lungs will be manifested as coughing, wheezing, cough phlegm especially clear, thin, and even edema. Different organs will lead to different pathogenic characteristics, cold in the clinic will also lead to pain in the body, as well as joint contraction, spasm, flexion and extension of the adverse, these are the characteristics of cold, need to be under the guidance of the doctor reasonable treatment.