The utility model discloses an uneven constant acceleration thermal ageing test device of insulated paper, include: controlling means, heating device, heat abstractor, oil pump, temperature sensor, an oil pipe, the 2nd oil pipe, the 3rd oil pipe, oil tank, fuel tank cap, first pillar, second pillar, third pillar, fourth pillar, the 5th pillar, the 6th pillar, the 7th pillar, the 8th pillar, the 9th pillar, the tenth pillar, first heating ring, second heating ring, third heating ring, fourth heating ring and power. The embodiment of the utility model provides an uneven constant acceleration thermal ageing test device of insulated paper can control heating temperature, and the experiment interior arrangement gets that to put easy operation convenient, and factor of safety is high, can effectively solve the unable simulation insulated paper of current experimental apparatus during real work problem of the acceleration heat ageing state in inhomogeneous thermal field in oil.