The invention belongs to the technical field of electrical equipment, and particularly relates to a full-automatic check system for a transformer oil chromatography on-line monitoring device. The full-automatic check system is suitable for the accuracy and repeatability of the transformer oil chromatogram on-line monitoring device. The full-automatic check system comprises an oil distribution system and a verification system. According to the full-automatic check system, complete automation is achieved in the oil distribution and verification process, oil sample acquiring, gas loading, oscillation degassing and chromatography detecting and analyzing are all automatically completed by the system, errors brought by human factors are reduced, only component values of various gas of oil samples need to be preset, and the labor intensity is greatly reduced. Both wireless transmission and wire transmission can be adopted, the trouble of multiple connecting wires is eliminated, and therefore the working efficiency is obviously improved. The full-automatic check system further has the advantages of being small in floor area, easy to operate, high in detection precision and easy to achieve, has the extremely high application and popularization value and can be widely applied to units such as scientific research institutions and check and verification mechanisms.