An electric motor control apparatus for a multiphase AC electric motor, comprising: a current detecting circuit configured to detect currents flowing through respective phases of the electric motor; current control means configured to determine a multiphase voltage command in accordance with a torque current command corresponding to a target value of a torque to be generated by the electric motor, detection currents of the respective phases from the current detecting circuit, and a motor rotation angle of the electric motor from motor rotation angle detecting means; a switching element driving circuit configured to command an inverter to perform switching manipulations on the basis of the multiphase voltage command from the current control means; wherein the inverter consists of switching elements (61A-63A, 61B-63B) that are operated by receiving switching manipulation signals from the switching element driving circuit and that control currents to be fed to the respective phases of the electric motor; wherein the current control means include: normal-state current controlling means for use in an normal state, abnormal-state current controlling means for use in an abnormal state, characterised by that the current control means further include an abnormal-state determining means configured to determine the abnormal state in which one phase of the electric motor wiring, the inverter wiring or a wiring connecting the electric motor and the inverter, or in which one phase of the output arm of the inverter is short circuited, and switching means; and wherein, in a case where the abnormal state in one phase has developed, the abnormal-state current controlling means generate an abnormal-state voltage command corresponding to the abnormal state determined by the abnormal-state determining means, and the switching means output the abnormal-state voltage command from the abnormal-state current controlling means as the multiphase voltage command, so as to perform current control by the abnormal- state current controlling means replacing the normal-state current controlling means, and wherein the abnormal-state current controlling means include selective switching element disabling means that give a command of a disabled state to the switching element (61A-63A, 61B-63B) of at least one normal phase temporarily in a case where the motor rotation angle lies in an angular range in which the phase current is to be zeroized. a current detecting circuit configured to detect currents flowing through respective phases of the electric motor; current control means configured to determine a multiphase voltage command in accordance with a torque current command corresponding to a target value of a torque to be generated by the electric motor, detection currents of the respective phases from the current detecting circuit, and a motor rotation angle of the electric motor from motor rotation angle detecting means; a switching element driving circuit configured to command an inverter to perform switching manipulations on the basis of the multiphase voltage command from the current control means; wherein the inverter consists of switching elements (61A-63A, 61B-63B) that are operated by receiving switching manipulation signals from the switching element driving circuit and that control currents to be fed to the respective phases of the electric motor; wherein the current control means include: normal-state current controlling means for use in an normal state, abnormal-state current controlling means for use in an abnormal state, characterised by that the current control means further include an abnormal-state determining means configured to determine the abnormal state in which one phase of the electric motor wiring, the inverter wiring or a wiring connecting the electric motor and the inverter, or in which one phase of the output arm of the inverter is short circuited, and switching means; and wherein, in a case where the abnormal state in one phase has developed, the abnormal-state current controlling means generate an abnormal-state voltage command corresponding to the abnormal state determined by the abnormal-state determining means, and the switching means output the abnormal-state voltage command from the abnormal-state current controlling means as the multiphase voltage command, so as to perform current control by the abnormal- state current controlling means replacing the normal-state current controlling means, and wherein the abnormal-state current controlling means include selective switching element disabling means that give a command of a disabled state to the switching element (61A-63A, 61B-63B) of at least one normal phase temporarily in a case where the motor rotation angle lies in an angular range in which the phase current is to be zeroized.