A capsule medical device guidance system including a magnetic field generator that generates either a trapping magnetic field that attracts a magnetic field response unit at any position on a horizontal plane and traps a capsule medical device or a gradient magnetic field that has a substantially uniform magnetic field gradient and forces the magnetic field response unit. When the control unit switches the magnetic field from the trapping magnetic field to the gradient magnetic field, a control unit causes a storage unit to store a generation position on the horizontal plane, and when the control unit switches a magnetic field from the gradient magnetic field to the trapping magnetic field, the control unit causes the magnetic field generator to generate the trapping magnetic field at the position stored in the storage unit.