In order to identify the balance of Yin and Yang in our body, we need some methods of examination. The traditional ways are called The Four Methods of Examination namely: Observation; Listening and Smelling; Inquiring; Pulse Feeling and Palpation. In order to avoid misjudgment we need to exercise a comprehensive analysis for all the founding obtained by the above mentioned methods, not one or two. Indeed, there are more examination methods coming out, but the basic rule is the same. Finding out the standard; comparing the deviation with the standard and identify which end is Yin and which end is Yang. The Four Methods of Examination are just the beginning.