The invention discloses a transformer oil rapid aging reactor. The transformer oil rapid aging reactor comprises a reactor, which contains transformer oil, and is divided into a liquid part and a gas part; a temperature control module, which comprises a heating element, a PID controller and a main control unit that is used for sending a heating instruction to the PID controller to enable the PID controller to control the heating power of the heating element; a liquid testing module, which comprises a liquid pump, a first regulating valve, a first cooling device, a first infrared spectrometer and a first heating device, which are connected in sequence; an atmosphere control module, which comprises an air extractor, a second regulating valve, a second cooling device, a second infrared spectrometer and a second heating device, which are connected in sequence; and an electromagnetic field control module, which comprises a parallel voltage plate placed in the liquid, a coil and a voltage regulator, wherein the voltage regulator is connected with the PID controller and used for adjusting the voltage of the parallel voltage plate or the coil. According to the reactor provided by the invention, the aging process of the transformer oil is scientifically and effectively analyzed in combination with multiple factors, and the accuracy of the analysis result is improved.