The embodiments of the present disclosure provide an asymmetric hydraulic support for pseudo inclined mining in steeply dipping seam, wherein the asymmetric hydraulic support includes a top mechanism, a bottom mechanism, a telescopic mechanism, and a connecting mechanism; the top mechanism and the bottom mechanism are disposed in parallel to each other, and a projection of the top mechanism and the bottom mechanism on a working surface is a parallelogram, and a sum of an acute angle of each of two parallelograms and a steeply dipping angle in pseudo inclined mining is 90; the telescopic mechanism is provided between the top mechanism and the bottom mechanism, and two ends of the telescopic mechanism are rotationally connected to the top mechanism and the bottom mechanism, respectively; one end of the two sets of connecting structures of the connecting mechanism is hinged by a first articulating shaft, and a central axis of the first articulating shaft is located in a middle of the top mechanism and the bottom mechanism, and the other end of each of the two sets of connecting structures is hinged to a first side of the top mechanism and a first side of the bottom mechanism, respectively, by a second articulating shaft; one end of the telescoping structure is hinged to a set of connecting structure which is hinged to the top mechanism, the other end of the telescoping structure is hinged to the bottom mechanism, and a center point of the hinging is coplanar with a vertical bisector of a projection of an edge of the first side of the bottom mechanism on the working surface.