PROBLEM TO BE SOLVED: To monitor a body state by performing the evaluation of motion and the evaluation of physiological information at the same time. SOLUTION: An acceleration sensor 11 and an angular velocity sensor 12 are mounted on the body such as an arm and a pulse wave sensor SR is also mounted thereon and the respective detection signals of the acceleration, angular velocity and pulse wave of these sensors are transmitted by a radio transmission means 22. The body state wherein both of the motion and the physiological information are combined can be monitored by using the data related to the motion of the acceleration and angular velocity and the physiological data being pulse waves. For example, a warning signal is outputted when pulsation is abnormally high through quantity of motion is little.