The invention relates to a linear motor and air floatation combined driving vertical servo mechanism, and belongs to the field of physical simulation. The vertical servo mechanism comprises an air channel part, a linear motor part, a sensor part and a vertical movement part. The vertical movement part is composed of a base, an inner sleeve, an outer sleeve and an upper plane; the air channel part is located outside the vertical movement part and is composed of a high-pressure air bottle, a switch valve, a proportional valve and an air pressure controller; the linear motor part is located in the vertical movement part and comprises a rotor and a stator; the sensor part is located outside the vertical movement part and installed on the lower portion of the outer sleeve. Constant-pressure air is provided for a cavity part of the inner sleeve through the air bottle, the outer sleeve part can obtain gravity compensation by adjusting the opening degree of an outlet valve, and the outer sleeve can move vertically through control over a linear motor. The vertical servo mechanism has the advantages that control is convenient to carry out, friction force is small, and the stroke is long.