The invention relates to a turbine disc rigidity self-reinforcement turbine structure. The turbine disc rigidity self-reinforcement turbine structure comprises a shell, a first-stage turbine stator, a second-stage turbine stator, a first-stage turbine rotor, a second-stage turbine rotor, a graphite ring and the like, wherein the first-stage turbine stator and the second-stage turbine stator are arranged in the shell; the first-stage turbine rotor and the second-stage turbine rotor are provided with turbine disc rigidity self-reinforcement structures. The turbine stators are connected with the shell. The first-stage turbine rotor and the second-stage turbine rotor are fixed to the central axis of the shell through a rotary shaft after being connected through the turbine disc rigidity self-reinforcement structures. The graphite ring arranged in a disc hole of the second-stage turbine stator and a second-stage turbine rotor labyrinth structure form contact seal. When the turbine rotors rotate at high speed, the lapping joint tightness of the turbine disc rigidity self-reinforcement structures is improved, and the synthetical stiffness of the first-stage and second-stage turbine rotors is improved, so that the vibration safety is improved.