The invention discloses a hydraulic pile hammer gas-liquid control drive system which can adjust impact energy and frequency in a stepless way, comprising an impact oil cylinder (2), an impact point signal acquisition valve (3), a main oil feeding conical valve (4), a main oil return conical valve (9) and a main control valve (13); wherein, the lower cavity of the impact oil cylinder (2) is communicated with the main oil feeding conical valve (4) and the main oil return conical valve (9), and the upper cavity the impact oil cylinder (2) is filled with nitrogen and communicated with the Ak3 control port of the main control valve (13); the output K2 port and K1 port of the main control valve (13) are respectively communicated with main oil feeding conical valve (4) and the control cavity ofthe main oil return conical valve (9), the control port Ak2 of the main control valve (13) is communicated with the K2 cavity, the control port AK is connected with controlling oil Pk, and the controlport Ak1 is connected with the impact point signal acquisition valve (3). The invention is a hydraulic pile hammer gas-liquid control drive system which can adjust impact energy and frequency in a stepless way, wherein, the hydraulic pile hammer can not only achieve the purpose of large impact energy, but also realize the remote stepless adjusting of the impact energy and the impact frequency, thus meeting the adjusting requirements of actual construction on the impact energy and the impact frequency.