A passive exercise bed is disclosed. The passive exercise bed of the present invention comprises a main body, a back fixing unit, a head fixing unit, two arm fixing units, a hip unit, a plurality of extendable units, a plurality of leg fixing units and a control unit. Several driving units are disposed inside the main body and may be activated through the control unit to move or drive the head fixing unit, two arm fixing units, hip unit and extendable units. Therefore, the passive exercise bed of the present invention may be used to stretch out our waist, leg joints, upper body, shoulders, arm joints, elbow joints, wrist joints, the two sides of waist and back as well as hip joints.
