The invention discloses a dual-winding BSRM suspending winding open-circuit fault fault-tolerant compensation method, and belongs to the technical field of fault-tolerant control of a switched reluctance motor. Through a direct toque control and direct suspension force control combined control mode, fault-tolerant operation of a dual-winding BSRM is realized during open-circuit fault of a set of suspending winding: selecting a basic voltage vector of each phase of main winding according to a torque hysteresis signal and a flux linkage hysteresis signal; selecting the suspending winding, which is in the same direction with the suspending winding in a fault phase, in a compensation phase as a compensation suspending winding; selecting the voltage vector of the suspending winding in the fault phase as the voltage vector of the suspending winding in the compensation phase; and selecting voltage vector of the other set of suspending winding in the fault phase according to the suspension force hysteresis signal. The method is simple and reliable, improves safety of the motor, expands application range of the bearingless switched reluctance motor in various fields, especially in the aspect of aerospace, and realizes reliable operation of the dual-winding bearingless switched reluctance motor under the suspending winding open-circuit fault.