A measuring apparatus for measuring surface topography of bearing and other parts comprises a pedestal (1), an absolute encoder (2), a ball screw (3), an X-axis sliding guide track device (4), an X-axis limit switch (5), an X-axis signal collection grating (6), a driving box supporting plate (7), a sensor driving box (8), an upright guide track (9), a Z-axis motor (10), a Z-axis manual adjusting knob (11), an X-axis motor (12), an X-axis belt wheel and cog belt (13), an inductive sensor device (14), a sensor coupling rod (15), a multi-dimensional workbench (16) and an electrical system. The invention can measure more than 100 parameters, including profile, waviness, roughness, peak height, valley deepness, total height, average deviation, gradient, slope, bearing length ratio and others; provides detection reference for users to perform various technical analyses to the workpiece to be measured; and can add certain measurement parameter at any time according to the requirement of users.