The invention discloses a novel petroleum transportation pipeline indented type flashboard which comprises a disc body; two rectangular clamping grooves are formed in the upper edge of the disc body; a first rubber strip is arranged on the circumferential side of the disc body; bearing surfaces are arranged on the two sides of the disc body respectively; four fan-shaped buffering grooves are formed in the two bearing surfaces; grids are arranged in the four fan-shaped buffering grooves; and the tops of the four fan-shaped buffering grooves are fixedly connected by a fixing piece. With the arrangement of the two rectangular clamping grooves formed in the disc body, the bearing surfaces provided with the fan-shaped buffering grooves, and the grids arranged in the fan-shaped buffering grooves, compared with the prior art, the novel petroleum transportation pipeline indented type flashboard has better blocking and buffering functions, when petroleum impacts the fan-shaped buffering grooves, multiple swirls are formed on the two sides of the grids and the impact on the single fan-shaped buffering groove is reduced, and the novel petroleum transportation pipeline indented type flashboard has better sealing effect with the adoption of the rubber strips.