The present invention relates to a web-based obesity management system. The present invention provides: a unit making a guidance (voice, vibration, text message, LED light color, and on/off) for a user to do exercise in accordance with calculated exercise strength by calculating the exercise strength optimized for a user based on health condition survey information and personal information such as the gender, age, weight, and height of the user by measuring a heart rate from a heart rate sensor attached to the body of the user a unit accelerating the dissolution of body fat by attaching a low frequency stimulator of which frequency and pulse width are irregularly changed by a random number generator and a unit measuring the body fat and reporting the quantity of the body fat in real time even during the exercise. A group, having the same race, gender, age, height, and weight as the user, is classified through real time body fat measurement. The distribution of body fat combustion in the same group is obtained from body fat measurement data, and based on the distribution, a calculated target heart rate (THR) is corrected to efficiently burn the body fat by making the user continuously do the exercise with accurate exercise strength by exercise time. Moreover, the present invention is capable of providing current health condition information about the user by connecting results of research papers about obesity-related diseases with the health condition information and personal information of users, stored in a web server in teal time, and managing obesity by effectively removing the body fat through motivation by providing exercise information of the top user through ranking the users based on amount of fat burned as well as exercise information and ranking information in the same group of the user.COPYRIGHT KIPO 2016본 발명은 웹기반 비만관리시스템에 관한 것으로, 사용자의 몸에 부착된 심박센서로 부터 심박수를 측정하여, 사용자의 성별, 나이, 체중 및 신장과 같은 개인정보 및 건강상태 설문 정보를 바탕으로 사용자에 최적화된 운동강도를 산출하여,산출된 운동강도에 맞추어 사용자가 운동할 수
