Artificial pile foundation construction hole forming method

The invention relates to the technical field of pile foundation construction, in particular to an artificial pile foundation construction hole forming method. When hole forming is carried out, rock at the edge of the periphery of a pile hole is smashed firstly so as to form a groove along one circumference of the edge of the pile hole, the groove is an annular through groove, the protruding rock surrounded by the groove is pile hole core rock, and a groove is formed in the edge of the pile hole core rock; and a steel wedge is used for smashing the rock at the position more easily, a gunpowder explosion method does not need to be used for smashing, the gunpowder detonator construction using amount can be reduced, the construction cost can be saved, and meanwhile the construction risks are reduced.