A bidirectional reversible medical skin tension reducing closer is provided. The closer comprises a left substrate and a right substrate, both of which are configured to be horizontally and symmetrically arranged, a left pawl and a right pawl fixedly arranged on adjacent ends of the left and right substrates respectively, and a left rack and a right rack, one end of each of which is fixedly connected to the left and right pawls respectively in an up-down side-by-side arrangement. Ratchets on the left and right pawls tilt towards the left and right substrates respectively, and the other ends of the left and right racks pass through the space beneath the right and left pawls respectively and are engaged with ratchets provided on the bottom of the right and left pawls respectively. Adhesive layers for fixing the left and right substrates onto the surface of the skin are arranged on the bottom surfaces of the left and right substrates. According to the invention, forces can be uniformly applied from two sides, and the closure degree of the closer can also be freely adjusted.
