A capsule medical apparatus includes a capsule exterior member and a sensor that can detect the change of an atmospheric physical quantity caused outside the exterior member in the non-contact state, and performs, based on the temporary change in atmospheric physical quantity detected by the sensor, at least one of first control for switching operation from the ON-state of energy supply to the electric circuit from the battery to the OFF-state of the energy supply and of second control for switching operation from the OFF-state of the power supply to the ON-state of the power supply, and holds the state of energy supply switched by the control until another change of atmospheric physical quantity is detected.