The invention discloses a drilling construction technology of an offshore wind power drilling machine. The drilling construction technology comprises the following steps that A, the drilling machine is assembled and debugged, and the drilling machine is conveyed to the top of a stabilizing pile platform; B, an 800T crane is used for hoisting a drilling tool system onto the drilling machine to be assembled and then put into the stabilizing pile platform; C, a drill bit of the drilling machine communicates with a hydraulic oil circuit of a guide apparatus, and a hydraulic valve is operated by expanding the drill bit and the guide apparatus to a specified diameter through an oil cylinder; and D, the drill bit and the hydraulic oil circuit of the guide apparatus are cut off, the size of a drill tool is locked, and then drilling is preformed. The drilling construction technology of the offshore wind power drilling machine is simple in process, high in drilling efficiency and high in safety.