No matter what disease, there must be a clear diagnosis before talking about treatment, Western medicine is so, Chinese medicine is so, Western medicine diagnosis can be clear remotely, as long as the patient to provide sufficient information, Chinese medicine diagnosis is not possible through remote clear, because only face to face to collect comprehensive information, the four diagnostic eight outlines can be clear, only the four diagnostic eight outlines are clear, the diagnosis can be clear, in particular, identification can be clear. Only when the four diagnoses and eight outlines are clear can the diagnosis be clear, especially the identification of evidence. The so-called four diagnosis is to look, smell, ask and cut, it is impossible to have four diagnosis without meeting, the eight outlines that is, the disease of yin, yang, surface, inside, cold, heat, deficiency, real, to clarify the eight outlines, there must be four diagnosis information, so Chinese medicine prescription must be face to face with the doctor and the patient, or else it will only be by chance.