The utility model relates to a sulfur hexafluoride analyte raman spectroscopy on -line monitoring analysis appearance. Its characteristics are: including the laser instrument, thus the lasing in the sample room can be to the sample room of this laser instrument, the scattered ray export of this sample room is through the import intercommunication of filter system with raman spectrometer, and photon counter and computer link are passed through in this raman spectrometer's export to this photon counter still is connected with the high -voltage power supply, wherein still include the image sensor towards raman spectrometer, this image sensor and aforesaid computer link. The utility model provides a sulfur hexafluoride analyte raman spectroscopy on -line monitoring analysis appearance, it detects the SF6 decomposed gas body group and assigns to discover early the inside insulating defect of SF6 electrical equipment through based on the raman spectrum detection technique, can reduce the emergence probability of the sudden trouble of SF6 inflation equipment.