The invention discloses a method for monitoring a multipoint grounding failure of a magnetic suspension stator coil, which comprises the steps of: arranging a relay protection device which can recognize whether a stator branch is disconnected with a power supply and has a communication capacity on a power side switching station on each stator branch; arranging another relay protection device which can monitor a three-phase current and has a communication capacity on a star point side of each stator branch; and when any one phase of current of the branch exceeds a setting value and is in an overcurrent state and the branch is disconnected with the power supply, judging that the branch generates the multipoint grounding failure, and sending an alarm signal. The method disclosed by the invention can be used in a high-speed magnetic suspension traffic system and used for rapidly judging whether the branch generates the multipoint grounding failure by using the induction current generated by a train in a stator even if certain branch is disconnected with the power supply due to the failure and a magnetic suspension train passes through a failed stator coil, sending the alarm signal andcontrolling the brake of the train, and ensures that the train safely runs.