Gas chromatograph for mixture detection and analysis and use method thereof

The invention discloses a gas chromatograph for mixture detection and analysis and a use method thereof, relates to the technical field of gas chromatographs, and aims to provide a gas chromatograph for mixture detection and analysis, which can continuously detect samples without cooling, improve the sample detection efficiency and reduce the waste of electric power resources, and a use method thereof. According to the technical key points, the device comprises heat insulation plates, a connecting column and a chromatographic column sequentially penetrate through the multiple heat insulation plates, the multiple heat insulation plates divide an inner cavity of a furnace temperature box into multiple separation areas, a heating system is used for heating the multiple separation areas, and the internal temperatures of the multiple separation areas are gradually increased in the sample flowing direction. The inner cavity of the furnace temperature box is divided into the plurality of separation areas by the heat