The utility model provides an extra-high voltage grounding switch using an SF6 arc extinguish chamber for inducing current. The extra-high voltage grounding switch using the SF6 arc extinguish chamber for inducing the current comprises a grounding switch body and an auxiliary return circuit. The grounding switch body comprises a main fixed contact, a main disconnecting link, a grounding base, a main supporting base, a main disconnecting link operating mechanism and a ceramic bottle, the ceramic bottle is fixed on the main supporting base, the main fixed contact is fixed at the upper end of the ceramic bottle, the grounding base is fixed on the main supporting base, the main disconnecting link is installed on the grounding base, and the grounding base is connected with the main disconnecting link operating mechanism. The auxiliary return circuit comprises a static arc contact, a dynamic arc contact, an SF6 arc extinguish chamber assembly and a spring operating mechanism, the static arc contact and the dynamic arc contact are connected integrally, the dynamic arc contact is hinged to the end of the main disconnecting link and connected with the SF6 arc extinguish chamber assembly through a flexible insulation lead, the SF6 arc extinguish chamber assembly and the spring operating mechanism are fixed on the main supporting base, and the SF6 arc extinguish chamber assembly and the spring operating mechanism are connected. The extra-high voltage grounding switch has excellent capacity for electromagnetic induction current and electrostatic induction current with opening and closing high parameter and is suitable for extra-high voltage and extreme high voltage substation projects.