The invention relates to a device for isolating an electrified body on an isolating switch from a grounding body on the isolating switch, in particular to an improved insulation baffle. The improved insulation baffle comprises a first insulation baffle and a second insulation baffle. One side end of each insulation baffle is provided with two U-shaped ports, and the baffle surface of the end, provided with the ports, of each insulation baffle is provided with two plug holes, wherein the two plug holes are distributed on the two sides of the corresponding ports. Two fixing piles are fixed to the second insulation baffle, and a plug is fixed to each fixing pile through a stay cord. In the using process, the two U-shaped ports of the first insulation baffle are clamped onto two supporting magnetic bottles respectively, the two U-shaped ports of the second insulation baffle are clamped onto the two supporting magnetic bottles respectively in the opposite direction, the ends of the two insulation baffles intersect horizontally, and then the plugs are inserted into the plug holes, so that the two insulation baffles are fixed through the plugs and do not fall down; meanwhile, the plugs are fixed to the fixing piles, operation is facilitated, and the plugs are not easy to lose.