The versatile hydraulic foundation drill rig is a kind of bored pile drilling equipment with high efficiency and versatility. It can be adapted quickly to cope with such drilling tools as CFA, short augers, barrel drill bits, rock bits to make holes. It can be also equipped with the casing oscillator to perform full casing drilling, or with various drill buckets to construct the diaphragm wall. The structure and features of the versatile hydraulic foundation drill rig are described.