The invention provides a vertical drawing type insulating right-angle baffle for a porous baffle. The right-angle baffle comprises a base baffle, an upright baffle and a movable insulating strip, wherein the left side of the upright baffle is fixedly connected with a combining part; a nick which extends upwards and is matched with an arrester is formed on a bottom side of the base baffle; the combining part is provided with a long jack which transversely penetrates and extends along the right direction of the base baffle; the base baffle passes through the long jack of the combining part; themovable insulating strip can transversely slide along the upper surface of the base baffle; in a first working state, the right side of the base baffle is fixed in the long jack of the combining partthrough a fastening screw, and in a second working state, the left side of the base baffle is fixed in the long jack of the combining part through the fastening screw; and the upright baffle close tothe left side of an insulating handle is fixed with one end of the insulating handle.