Engineering machinery supporting leg

The utility model discloses an engineering machinery supporting leg, and relates to the technical field of engineering machinery. The engineering machinery supporting leg comprises a cylinder body, and a liquid guide pipe is communicated with the outer surface of the left side, close to the upper end, of the cylinder body. According to the engineering machinery supporting leg, the left end of a liquid guide pipe is fixedly provided with a through pressurizing device, the pressure intensity in a cylinder body is improved, a rubber ring drives a telescopic column to move downwards along the inner wall of the cylinder body, the lower end of the telescopic column makes contact with the ground, engineering machinery is lifted to be away from the ground, and after inserting holes formed in the surfaces of the left side and the right side of the telescopic column are separated from the cylinder body, a motor rotates clockwise; the gear drives the tooth block to move in the direction away from the telescopic column,