A rotating electric machine control device includes: an inverter in each winding set of a rotating electric machine having high and low potential-side switching elements corresponding to each phase; and a controller. The controller has: a signal generator of a control signal for turning on and off the high and low potential-side switching elements; a disturbance voltage estimating device calculating a disturbance voltage estimation value of a disturbance voltage, which is generated in a normal system, based on a current flowing in a failure system when the short circuit failure occurs; and a command calculating device calculating a normal system command value in accordance with the disturbance voltage estimation value.