[PROBLEMS] To provide a system and a method for accurately measuring the weight of a portion of a human body.[MEANS FOR SOLVING THE PROBLEMS] This system for measuring the weight of each of six body portions of a human body comprises support base provided for six body portions and supporting the body portions, six body portion measuring units each having a weight measuring part measuring the weight of the body portion and a data transmission-reception part transmitting and receiving data including data on the weight of the body portion measured by the weight measuring part, and a data processing unit transmitting control data to the six body portion measuring units and receiving the data on the measured weights of the body portions. The data processing unit comprises a means determining whether or not the total sum of the data on the measured weights of the six body portions matches the weight of the human body within a present allowable range.