The invention discloses an amphibian four-caterpillar pile engine, which comprises a working device, a special chassis and a float aiding device, wherein the working device comprises a pile snatching clamp, a pile driver, a pile follower, a gin pole, an inclined strut, a retractable device and a winding. The special chassis comprises a floating box chassis, a supporting leg board, a balance weight, a power device, a transmission device and a control device. The amphibian four-caterpillar pile engine also comprises at least two walking devices, and each of the walking devices comprises a retractable oil cylinder or a supporting leg sleeve capable of controlling the lifting independently, an upright post and a caterpillar mechanism; the retractable oil cylinder or the supporting leg sleeve is fixedly and vertically arranged on the supporting leg board, a piston rod of the retractable oil cylinder is fixedly arranged on the upright post; and under the control of the control device, the power device outputs power to the transmission device, and the power is output by the transmission device to the walking device and the winding. The amphibian four-caterpillar pile engine is used for realizing the piling construction in inshore shoals quickly, safely and reliably.