The invention discloses a running state control method of a brushless double-fed motor. The running state control method comprises the steps of making a control system powdered on, completing self-detection of the system, and entering a standby state; and judging a target control state of the brushless double-fed motor and controlling the brushless double-fed motor to work in the target control state by the control system according to a starting-up command which is received in real time and running state of a part under the standby state and according to a judgment rule. A special structure and control requirement of the brushless double-fed motor are combined, a corresponding action is executed on each switch according to switching of different states and according to a principle of a state mechanism, so that the original complicated switching logic control process becomes simple and high-efficiency; state and fault classification of the motor is used as a switching condition, the scientific reasonableness of system action is ensured, and the running safety is also effectively guaranteed; and moreover, when a controller fault occurs in the system, the motor is maintained in an asynchronous running state by state switching, so that uninterruptible running of site operation is ensured, and the running state control method has important significance.