Rotary excavating drill rod capable of preventing rod carrying

The utility model discloses a rotary excavating drill rod capable of preventing rod carrying. The rotary excavating drill rod comprises a plurality of section rods, wherein the plurality of section rods are composed of a first section rod arranged on the outermost side and a third section rod arranged on the innermost side, a plurality of second section rods are sequentially arranged between the first section rod and the third section rod in a sleeved mode, and a disc-shaped structure is arranged at the bottom end of the third section rod. The outer side walls of the first section rod, the second section rods and the third section rod are each provided with three sets of grooves in an annular array mode with the center of the drill rod as the base point. The drill rod has the advantages that the drill rod is stable in structure and even in stress, the service life of the drill rod can be prolonged, the working efficiency of the rotary drilling rig can be improved, in the using process of the drill rod, rod cl