The invention discloses a power grid equipment fixing device. The power grid equipment fixing device structurally comprises a mounting piece, connection holes, a clamping hole, an insulator, a quick connecting device body and a quick fixing device body, connection holes are formed in the top of the mounting piece, and clamping holes are formed in left and right ends of the mounting piece. In orderto solve the problems that an existing fixing device usually penetrates an insulator through a bolt and then is locked through a nut with installation trouble, the quick connecting device is arrangedat the top of an insulator, a clamping block is inserted from the top of the insulator, the insulator passes through the connection holes, the top of a connector is inserted into the clamping block,the clamping block penetrates out of the bottom of the connector, at the same time, a first spring is stressed to be compressed, the top of the first spring is attached to the bottom end of the top ofthe mounting piece, the first spring provides elastic force to apply to the connector and the connecting plate, the connector applies pressure to the clamping block to drive a connecting rod to movedownwards, a limiting plate is attached to the insulator for fixing, and therefore, the effect of convenient mounting is achieved.