Disclosed is an instep pressing device, comprising a supporting plate (2) and a hanging belt (3), wherein supporting pads are arranged near two ends on a face of the supporting plate (2), and a tensioner (1) is arranged in another face; when in use, the supporting pads respectively cushion a position near metatarsal heads on an instep and a position near one third from the anterior of a calf from underneath; the tensioner (1) comprises a housing (1.1), a cover (1.2), a limiting shaft (1.5), a rotary cylinder (1.4), a cross beam (1.3), a pressure sensor (1.7), an electric motor (1.6) and a control circuit (1.8); the limiting shaft (1.5) is arranged above/below a central position at the bottom of the housing (1.1)/the cover (1.2); the top/bottom of the rotary cylinder (1.4) is provided with a planetary speed reducer (1.4b), is externally provided with threads (1.4a), and is rotatably sheathed outside the limiting shaft (1.5); the center of the cross beam (1.3) is provided with a threaded through hole that can be screwed together with the rotary cylinder (1.4); a side wall (1.1a) of the housing is provided with a guide groove (1.1b) that limits the axial movement of the cross beam (1.3); the middle portion of the hanging belt (3) is bag-shaped, and two ends thereof are hung on the cross beam (1.3) for pulling a heel; the sensor (1.7) is arranged between the bottom face of the rotary cylinder (1.4) and a bottom plate of the housing (1.1); and the control circuit (1.8) is provided with a user programming unit and a program storage unit. An initial pressure value, a turning pressure value, a delay time and the number of repetitions can be set by keys and can be displayed.