Device for collecting soil breathing gas

The utility model relates to a device for collecting soil breathing gas. The device comprises a glass bottle, a bottle cap installed on the glass bottle and used for sealing the glass bottle, and a gas guide pipe penetrating through the bottle cap and communicated with the interior and the exterior of the glass bottle. Placing a soil sample to be detected in the glass bottle; the gas guide pipe comprises a sampling guide pipe, a gas inlet guide pipe and a gas outlet guide pipe, the gas inlet end of the gas inlet guide pipe, the gas outlet end of the gas outlet guide pipe and the gas outlet endof the sampling guide pipe are all located outside the glass bottle, and the gas outlet end of the gas inlet guide pipe extends into the bottom in the glass bottle; the gas inlet end of the gas outlet guide pipe and the gas inlet end of the sampling guide pipe are positioned at the upper part in the glass bottle; the gas inlet end of the gas inlet guide pipe, the gas outlet end of the gas outletguide pipe and the gas out