The utility model discloses a kind of gas sampling instrument, including sampling shell, the left and right sides of the lower end middle part of sampling shell are equipped with protective frame, the inside lower end middle part of sampling shell is equipped with connecting
pipe, the lower end of connecting
pipe is equipped with sampling
bottle, further including sampling mechanism, sampling mechanism: it includes connector, limit slot, limit claw, limit head, limit protrusion and collection
assembly, the lower end of the outer surface of connecting
pipe is equipped with bearing, connector is set on the outer surface of bearing, limit slot is respectively opened in the left and right sides of the lower end of the outer surface of connector, limit claw is respectively slidably connected in the middle of the middle part of protective frame close to connector side, the gas sampling instrument, with sampling mechanism, air pipe is integrated with sampling shell, air pipe is received by mounting groove, portable air pipe is not easy to lose, sampling
bottle can also be quickly connected and disassembled by the up-down movement of limit claw, improve the sampling efficiency of gas.