A guidance apparatus includes: a magnetic field generator configured to generate a magnetic field that acts on a magnet a magnetic field shielding material configured to shield the magnetic field generated by the magnetic field generator an operation input device configured to receive an input of at least one of a target position and a target posture for guiding a position and a posture of a capsule medical apparatus and a controller configured to control the magnetic field generator to generate a magnetic field that has been corrected to offset or reduce a deviation amount of the position or the posture of the capsule medical apparatus with respect to the target position or the target posture, caused by distortion, due to the magnetic field shielding material, of a magnetic field for guiding the capsule medical apparatus to at least one of the target position and the target posture.
