A detecting system of the position and the posture of a capsule medical
device includes a main body of the capsule medical device that is
inserted in a living body, a coil in a capsule that is arranged to the
main body of the capsule medical device and forms a resonant circuit, a
magnetic field generating device that is arranged around the living body
and generates the Alternating magnetic field for generating an induced
magnetic field in the coil in the capsule, and a plurality of magnetic
field detecting devices that detect the strength of the induced magnetic
field generated by the coil in the capsule by the magnetic field
generated by the magnetic field generating device.