A health care apparatus and method thereof. The health care apparatus comprises: a sensing position determining unit determining a body part of an examinee where vital signals of the examinee are sensed a vital potential sensing unit sensing potential signals of the examinee corresponding to a determined result and an analyzing unit analyzing the sensed result. Accordingly, the health care apparatus can determine body parts by itself and senses potential signals corresponding to the body parts to calculate reliable measurements without information of the body parts to which the health care apparatus is attached. Furthermore, the health care apparatus can be easily attached to the body compared to a conventional health care apparatus, and can calculate a health index reflecting the present behavior pattern of the examinee. The health care apparatus can also determine the health state of local body parts of the examinee and inform the examinee of the calculated health indexes on a real-time basis.