Drilling sampling device for gas environment

The invention discloses a drilling and sampling device for a gas environment, and relates to the technical field of drilling and sampling, the drilling and sampling device comprises a drilling cylinder, a channel pipe and a sampling cylinder which are connected with one another and are sequentially arranged in the material conveying direction; a driving assembly used for driving a spiral piece assembled in the drilling barrel is installed above the drilling barrel. A rubber bottom plate is integrally arranged in the channel pipe; according to the technical key points, the driving assembly and the pull-out piece which are linked with each other are arranged, the spiral piece can automatically move up and down by utilizing the combined design of the driving gear piece and the gear ring piece while the driving assembly drives the spiral piece to rotate, and sample soil in the spiral piece can be automatically taken out in combination with the pull-out piece; the polarization mechanism is driven to work in the ro