Disclosed herein is a stretching device which makes it possible for a user to stretch muscles such as the calf muscles and Achilles tendons. The foothold unit (10) includes a base plate (12), and an inclined foothold (11) disposed above the base plate at a position spaced apart from the base plate. A support pole unit (30) is disposed in a central portion of the foothold unit. The support pole unit includes a lower tubular member (31) fixed to the base plate (12), an upper tubular member (32) disposed in the lower tubular member so as to be adjustable in height, with a handle (36) provided on an upper end of the upper tubular member, and a fastener (33) fastening the upper tubular member to the lower tubular member. The inclined foothold is provided so as to be rotatable with respect to the support pole unit.