Gas-water switching double-channel drill rod

The invention discloses a gas-water switching double-channel drill rod which comprises a drill bit body, an outer drill rod and an inner drill rod, and the drill bit body is composed of a drill body front portion and a drill body rear portion and used for drilling work; a double-channel connector is arranged in the front portion of the drill body and composed of a connector outer pipe and a connector inner pipe. The outer drill rod is connected with the joint outer pipe, and the outer wall of the outer drill rod is hermetically connected with the rear part of the drill body; the inner drill rod is arranged in the outer drill rod and connected with the connector inner pipe in a sealed mode. An adjusting assembly and a plurality of buffering mechanisms are arranged in the center of the connector inner pipe. Compared with the prior art, switching of three working states of the two channels is achieved, drilling work is conducted through wind power deslagging, cooling work is conducted through hydraulic circulati