To solve problems wherein a method of measuring body fat and weight using a floor laying type weight measuring instrument is general as a conventional health care means, but in this method, a floor part space is taken, and there is no continuity in carrying out health care because habit is not formed.

An AC adapter of 100V from a domestic power supply is used connected to a socket jack of a toilet bowl. To carry out health care continuously, it is necessary to form the habit, to increase frequency and not to take space. Since the frequency of sitting on a toilet seat daily is many, a weak current flows from an electrode plate 2 with a resin cover by sitting on the upper part 1 of the toilet seat and interlocked with a body fat and weight measuring instrument 4 inside the toilet seat 3 and further interlocked with a sleeve part panel 5 to display measured numeric values on a measured value display panel 6, thus constituting a body fat and weight measuring toilet seat allowing easy and continuous health care without taking space.