The invention discloses a self-setting hanger. The self-setting hanger comprises an upper-end structure, a tie-back sleeve, a sealing part, a control head, a conical body, slips, a slips seat, a cylinder sleeve, a limit sleeve, an upper piston, a locking block and a lower piston, wherein the upper-end structure comprises an upper connector, a short section, a sealing head and a central tube which are sequentially fixedly connected along a first direction; the tie-back sleeve, the sealing part, the control head, the conical body, the slips, the slips seat, the cylinder sleeve and the limit sleeve sequentially sleeve the upper-end structure along the first direction; the valving claw of the control head is clamped into the first groove middle hole in the outer surface of the central tube; the upper piston sleeves the valving claw and is fixed on the conical body through a first shear pin; the locking block is disposed in the second groove middle hole in the outer surface of the central tube; the lower piston sleeves the locking block and is fixed on the slips seat through a second shear pin; the shearing force of the second shear pin is smaller than that of the first shear pin. The self-setting hanger has the advantages that the urgent need of the self-setting hanger which is simple in structure, capable of safely cementing a well and capable of automatically setting after well cementing in the prior art is satisfied, and the self-setting hanger is simple in structure, easy to operate, and safe and reliable.