The invention provides a device for running casing pipes in a gas extraction drill hole. The device comprises a casing pipe holder and a chunk propeller, wherein a first upper clamping base of the casing pipe holder is buckled on a first lower clamping base of the casing pipe holder to form a first bayonet for clamping one casing pipe, a first movable slips is arranged on the first upper clamping base in a sliding mode, a first adjusting rod penetrates through the first upper clamping base and is connected with the first movable slips, and the casing pipe in the first bayonet is clamped or released by adjusting the first movable slips; a second upper clamping base of the chunk propeller is buckled on a second lower clamping base of the chunk propeller to form a second bayonet for clamping one casing pipe, a second movable slips is arranged on the second upper clamping base in a sliding mode, a second adjusting rod penetrates through the second upper clamping base and is connected with the second movable slips, and the casing pipe in the second bayonet is clamped or released by adjusting the second movable slips. The casing pipe holder and the chunk propeller are matched to clamp or release the casing pipe, so that the casing pipe with the diameter larger than or equal to four inches is safely and efficiently run in the drill hole, and stability and safety of running the casing pipe are improved.