The utility model discloses a chromatographic analysis device capable of accurately positioning a transformer. INCLUDING CHROMATOGRAPHY SENSOR, electric control unit, the output end of the data transmission module is connected with a data analysis and processing unit for data analysis and comparison; the data analyzing and processing unit is connected with a chromatographic data memory of chromatographic data corresponding to an actual transformer model fault state; the display output end of the data analyzing and processing unit is connected with a simulation display screen and an audible andvisual alarm, wherein the simulation display screen simulates the distribution positions of factory transformers, and light-emitting elements in the audible and visual alarm are installed at the positions, corresponding to the transformers, of the module display screen. According to the utility model, the oil chromatography of the transformer can be conveniently analyzed on line at any time, anda fault point is accurately positioned by comparing with an actual type of transformer, so that an important dynamic basis is provided for operation and maintenance personnel to carry out latent overheating or discharging faults in the transformer.