The invention discloses a double-break disconnecting switch having grounding linkage. The double-break disconnecting switch having grounding linkage comprises a housing, double-break switch devices, a disconnecting switch driving device, grounding switch devices, a grounding switch driving device, a grounding switch transmission mechanism and a linkage device. The double-break disconnecting switch is installed inside the housing and realizes synchronized switching on and off of breakers on two sides through the disconnecting switch driving device; the grounding switch devices are installed on the housing to perform ground switching on and off on the double-break switch devices and realize switching on and off through the grounding switch driving device and the grounding switch transmission mechanism; the linkage mechanism is respectively connected to the disconnecting switch driving device and the grounding switch driving device; and when the double-break switch devices are in a switching off state, the grounding switch devices can be switched on, or, when the grounding switch devices are in a switching off state, the double-break switch device can be switched off.