The utility model discloses a spiral auxiliary slagging high pressure drill rod for hydrodynamic measures. The spiral auxiliary slagging high pressure drill rod is formed by sequentially connecting a male joint, a drill rod body and a female joint, and spiral is distributed on an axial surface of the drill rod body. A sealing thread section end surface appropriately extrudes a sealing rubber ring to form an axial sealing, sealing threads are screwed and connected to form a thread sealing, the inner wall surface of a large diameter direct-axis section of the female joint appropriately extrudes an O-shaped sealing ring on a large diameter direct-axis section of the male joint to form a radial sealing, and under the combined action of the axial sealing, the thread sealing and the radial sealing, the drill rod can undertake high pressure water of 63MPa without leaking. The high pressure water is conveyed, simultaneously the drill rod rotates axially, returning water carries coal dust to form fluid slagging, the drill rod spirally rotates and continuously raising the coal dust to form mechanical slagging, and under the synergistic effects of the fluid slagging and mechanical slagging, the phenomenon of blocking holes is difficult to occur. The spiral auxiliary slagging high pressure drill rod for the hydrodynamic measures has the advantages that the design is reasonable, the structure is simple, the drill rod is safe and reliable, the pressure of the conveyed high pressure water is greatly increased, and the problem of drill hole slagging in the hydrodynamic measures is effectively solved.