The invention relates to a combined mechanical tool setting gauge. The gauge comprises two mechanical tool setting gauge bodies, namely, the mechanical tool setting gauge body I in the height direction and the mechanical tool setting gauge body II in the end surface direction; the gauge comprises a circular gland, an end cover, guide pins, a base body, a spring I, a spring II, a measuring column I for performing tool setting on part steps, grooves or relatively small reference surfaces as well as a measuring column II for performing tool setting on part surfaces of relatively large reference surfaces. The combined mechanical tool setting gauge can be used on upper surfaces of parts and cavity surfaces and is designed according to the positioning principle of upper and lower reference surfaces of the tool setting gauge, reference scales are adopted for positioning, readings are direct and easy to understand, the gauge is more convenient to operate, the use method that traditional tool setting gauges depend on dial gauges excessively is broken through, and the design is brand new.