Detection device and detection method used for multichannel gas

The invention discloses a detection device and detection method used for multichannel gas. The device comprises: gas inlet tubes, wherein one ends of the gas inlet tubes are placed in a detection place and are used for sucking a gas to be detected; gas detection sensors, wherein every gas detection sensor comprises a gas inlet hole, a gas outlet hole and a gas probe, the gas inlet holes are in sealed connection with the other ends of the gas inlet tubes, the gas probes detect the composition and the content of the gas to be detected, the detected gas is discharged from the gas outlet holes, and the plurality of gas detection sensors are mutually connected in parallel; a plurality of flow control valves, wherein the quantity of the flow control valves is same to the quantity of the gas detection sensors, the flow control valves are connected with the gas outlet holes of the gas detection sensors in a one-to-one correspondence manner, and the flow control valves are used for controlling the feeding amount of th