The invention discloses a ground switch passing neutral section bow net arc suppressing method, further discloses a ground switch passing neutral section bow net arc suppressing device, and further discloses a ground switch passing neutral section device. The ground switch passing neutral section bow net arc suppressing method is used for reducing a current of a power supply loop constituted by power supply arms and a pantograph when the pantograph gets away from or makes contact with the power supply arms so as to suppress an arc in the passing neutral section process. The ground switch passing neutral section bow net arc suppressing device comprises high-impedance contact lines arranged at the tail ends of all the power supply arms and is used for reducing the current of the power supplyloop constituted by the power supply arms and the pantograph when the pantograph gets away from or makes contact with the power supply arms so as to suppress the arc in the passing neutral section process. The ground switch passing neutral section device comprises a switch assembly and the ground switch passing neutral section bow net arc suppressing device, and the switch assembly is used for connecting a neutral zone with the contact net two-phase power supply arms. The ground switch passing neutral section bow net arc suppressing method and device and the ground switch passing neutral section device all have the advantages of arc suppressing and the like.