The invention discloses an anti-corrosion material repairing device for petroleum pipelines and a using method thereof. The device comprises an accommodating body, an ash clearing piece and a spreading piece, wherein the accommodating body is provided with a left side inner wall, a right side inner wall and a top wall; the left side inner wall is provided with a plurality of limiting bulges; and the left side inner wall and the right side inner wall are separately arranged on the two sides of the top wall. A plurality of parts are integrated together, an ash clearing operation is carried out firstly through the ash clearing part, and then through movement of a position, the spreading piece is located in a working state, and then a process of spreading anti-corrosion materials is finished;and thus, the device is used more simply and conveniently, and the working efficiency is improved. In a non-use state, the spreading end of the spreading piece is positioned in a sealed state, so thatthe problem that the device is affected by external factors such as dust interference and pollution is reduced.