Long spiral drill rod

The utility model relates to a long spiral drill rod which comprises a center rod and a spiral blade fixedly arranged on the circumferential face of the center rod, a fixing shaft is coaxially arranged at the first end of the center rod, a drill cone head is fixedly arranged at the second end of the center rod, two drilling tools are further arranged at the second end of the center rod, and the spiral blade is fixedly arranged on the center rod. The two drilling tools are located on the two sides of the drilling cone head correspondingly and are symmetrically arranged. Wherein the drilling cone head and the drilling tool are respectively and detachably connected to the center rod. According to the long spiral drill rod provided by the utility model, the drill cone head and the drill tool are arranged at the front end of the center rod, so that the long spiral drill rod can quickly break soil and drill during drilling, and the drilling efficiency is improved; and moreover, the drill cone head and the drill too