Pile driver for building construction

The pile driver for building construction comprises a base, a clamping groove and a bearing seat, a through hole is formed in the base, a protective cover is arranged in the through hole, a first pile hammer is arranged in the protective cover, and a guide assembly is connected to the side wall of the protective cover; the guide assembly is connected with the auxiliary moving mechanism through a first belt transmission structure. According to the pile driver for building construction, when the pile driver needs to be moved, a worker can operate a control panel to control a first motor in an auxiliary moving mechanism to drive a second lead screw to rotate, and therefore a lead screw sliding block can move inwards to push a mounting plate and universal self-locking wheels at the bottom of the mounting plate to move downwards and stretch out of a base; the base is jacked upwards through the downwards-moving universal self-locking wheels till the positioning rod is pulled out of the ground, then the position of