The invention discloses a disconnecting link operating state identifying device. The device comprises a base and a terminal box, a left porcelain pillar and a right porcelain pillar are arranged on the base, and the left porcelain pillar is installed at and fixed to the left side of the top of the base through a bolt; the top of the left porcelain pillar is in bolted connection with a left support, the top of the left support is in rotary shaft connection with a disconnecting link left cross arm, and a groove and a left follow-up frame are arranged on the disconnecting link left cross arm; theleft porcelain pillar is installed at and fixed to the right side of the top of the base through a bolt, the top of the right porcelain pillar is in bolted connection with a right support, and the top of the right support is in rotary shaft connection with a disconnecting link right cross arm; a protruding groove and a right follow-up frame are arranged on the disconnecting link right cross arm,the terminal box is in bolted connection with the portion under the base through a conduit, and a signal receiver is installed at and fixed to the inside of the terminal box. According to the device,operating states of the electric disconnecting link can be easily monitored in real time, and not only is the working efficiency improved but also power equipment problems can be timely discovered.