Accumulation strength has poor ability in red bed slope and its self-stabilize is lower than normal slope. Red bed slope composed with accumulation can cause more disaster risks for highway slope engineering. As the main treatment structure, anti-slide pile can provide huge anti-slide force, and achieve better results. Bent type anti-slide pile is combined by horizontal structure. For thicker accumulation area and larger slope thrust area, project can get obvious treatment effect by bent type anti-slide pile. The paper analyzed the characteristic of red bed slope composed with accumulation and bent type anti-slide pile. A case of Guangyuan-Bazhong Expressway K63 Hejiamiao Colluvial Clay is showed below, in order to explain good treatment effect by the structure in slope engineering. At last, construction technology of bent type anti-slide pile suggested by the project.