PURPOSE: A device for measuring BMI(Body Mass Index) and a method thereof are provided to measure BMI information by using face information and to predict the BMI information in real time, thereby measuring the BMI information, supplied to a system for a treatment, an emergency medical service system, an u-Healthcare system, and a telemedicine system. CONSTITUTION: A device for measuring body mass index using face information(100) includes: an information storage unit(110) storing at least one set of BMI information corresponding to at least one set of first face information； an information receiving unit(120) receiving a set of second face information； and a BMI extracting unit(130) extracting BMI information corresponding to the second face information of at least one set of BMI information. [Reference numerals] (110) Information storage unit； (120) Information receiving unit； (130) BMI extracting unit； (140) Information transmitting unit하나 이상의 제1 얼굴 정보에 대응하는 하나 이상의 BMI(Body Mass Index) 정보를 저장하고, 제2 얼굴 정보를 수신하여 상기 하나 이상의 BMI 정보 중 상기 제2 얼굴 정보에 대응하는 BMI 정보를 추출하는 얼굴 정보를 이용한 BMI 측정 장치를 제공한다.
