The invention discloses a power supply aging test device, which belongs to the technical field of power supply circuit testing, and comprises a test box, the top of the test box is fixedly equipped with test circuit elements and display instruments, and the bottom of the test box is fixedly equipped with a base. A heating limit mechanism is fixedly installed on the top of the base, and a temperature control mechanism is provided on one side of the test box. In the present invention, it can adapt to the heating processing capacity of power supplies with different thicknesses, and the heating seat can simulate the influence of heat conduction of other circuit elements when the power supply is working by heating the heat transfer plate, which is beneficial to test the box test components for power supplies under different temperature states. Monitoring and acquisition of aging test data, the heat transfer plate fixes the position of the motor through the cooperation of the rear side fixing sleeve and the limit nut, which improves the safety and stability of the test and avoids the impact of external shaking on the data, effectively Improve test security and accuracy.