A fluid introduced into the subject 1, is introduced into the subject 1, the capsule body 2 for examination or treatment of the subject 1 within the fluid and provided with a permanent magnet, which is provided on one outside the subject , the system for guiding capsule medical device 11 wherein the magnetic field generator 20 which generates a magnetic attraction for the permanent magnet induces a capsule body 2, the mass of the capsule body 2 excluding the permanent magnet, the capsule smaller than the product of the density of the fluid and the volume of the body 2, the magnetic field generating device 20, magnetism is generated in the vertically downward direction and the maximum value of magnetic attraction that the magnetic field generator 20 is generated vertically upward to the capsule body 2 and guiding the capsule body 2 is smaller than the value obtained by multiplying the acceleration of gravity on the mass of the permanent magnet, the maximum value of the magnetic attractive force equal to the maximum value of the attractive force, generated in the vertical down direction.被検体1内に導入される流体と、被検体1内に導入され、永久磁石を備えて前記流体内で被検体1内の検査または処置を行うカプセル本体2と、被検体1外に設けられ、前記永久磁石に対して磁気引力を発生し、カプセル本体2を誘導する磁界発生装置20と、を備えたカプセル型医療装置誘導システム11において、前記永久磁石を除くカプセル本体2の質量が、カプセル本体2の体積と前記流体の密度との積よりも小さく、磁界発生装置20は、磁界発生装置20がカプセル本体2に鉛直上方向に発生する磁気引力の最大値と鉛直下方向に発生する磁気引力の最大値とを等しくし、前記鉛直上下方向に発生する磁気引力の最大値を、前記永久磁石の質量に重力加速度を乗算した値よりも小さくしてカプセル本体2を誘導する。
