The invention relates to a novel power-traction soil-taking system and a using method thereof. The novel power-traction soil-taking system comprises a power supplying system, a traction system and a soil-taking and soil-discharging system, wherein the soil-taking and soil-discharging system comprises a U-shaped hanging ring, a soil-storing sleeve, U-shaped fixing hanging rings welded on the outer side wall of an opening at the upper end of the soil-storing sleeve, edge feet welded on the outer side wall of an opening at the bottom of the soil-storing sleeve; a limiting rod welded on the inner side wall of the opening at the bottom of the soil-storing sleeve, a valve rotating shaft welded on the cylinder wall, at a distance of 30 cm from an opening in the bottom, of the sleeve wall of the soil-storing sleeve, and a rotary valve welded on the valve rotating shaft and rotate through the valve rotating shaft to achieve closing and opening functions; the U-shaped hanging ring is connected with the U-shaped fixing hanging rings through a rope and is connected with a power traction rope. The soil-taking and soil-discharging system achieves an inserting soil-taking function through the edge feet, is connected with the traction system through a connecting pulley B, and achieves a soil-discharging function through the rotary valve, so that the technical difficulty that soil in a PHC (prestressed high-strength concrete) tubular pile is difficult to discharge due to a small caliber is effectively overcome, the cost is reduced and the working efficiency is improved.