Abstract: A health care gaming device includes: a case, which can be placed on a platform or be handheld by an user; at least one communicating tube provided in the case; an inflow/outflow unit connected to the communicating tube, for the user to exhale and inhale gas; at least one sensor connected to the communicating tube, for sensing gas inflow and outflow and detecting gas flow; a processing unit connected to the sensor, for measuring pulmonary function and executing games; a display unit connected to the processing unit; and a keying unit connected to the processing unit, wherein the sensor generates a sensed deformation due to gas flowing in the communicating tube; the processing unit analyzes the sensed deformation and converts the analytical result to measurement data for pulmonary function or uses the analytical result as game data for proceeding games; and the display unit displays the measurement data and game pictures. The invention also discloses a method using such health care gaming device.