The invention discloses a petroleum guiding mechanism capable of avoiding petroleum waste. The petroleum guiding mechanism capable of avoiding petroleum waste comprises a guide pipe piece and a piston rod. The guide pipe piece comprises a plurality of petroleum guide cylinders which are connected in series. The petroleum guide cylinders are sequentially arranged from small to large along the axis according to the outer diameter and the inner diameter. According to every two adjacent petroleum guide cylinders, one end of the petroleum guide cylinder with the small outer diameter is located in a center hole of the petroleum guide cylinder with the large outer diameter. A piston is arranged at one end of the piston rod. The piston is matched with the center hole of the petroleum guide cylinder with the minimum inner diameter. The petroleum guide cylinders are sequentially moved along the axis, so that the guide pipe piece is drawn in, each petroleum guide cylinder with the small outer diameter scrapes off petroleum attached to the inner wall of the corresponding petroleum guide cylinder with the large outer diameter and pushes the petroleum to be accumulated, then the piston rod is used for pushing the petroleum attached to the inner wall of the petroleum guide cylinder with the minimum inner diameter to be accumulated, and the petroleum drops into a device for collecting the petroleum. In this way, the petroleum in the petroleum guide pipe is collected, and energy waste and environmental pollution are avoided.