A shoe with a leveling instrument for detecting a relative height and a gradient of a ground to step thereon with the shoe, includes an outsole disposed at a lower portion of the shoe, an upper disposed at an upper portion of the outsole, an x-direction leveling instrument formed or affixed at the girth (i.e., an upper strip portion or welt) of a front end portion of the outsole or the upper, a top surface thereof being externally exposed, and a y-direction leveling instrument formed or affixed at the girth of a side portion of the outsole or the upper thereof, a top surface thereof being externally exposed. Accordingly, the shoes having the leveling instrument can detect the relative height and the gradient around the ground stepped by a user, whereby helping to correct a swing posture of a golfer, conduct a measurement operation of various engineers in architectural and civil engineering etc., and correct a walking posture of a walker.