Device and method for testing service life of power adapter

The invention discloses a device and a method for testing the service life of a power adapter. The device comprises a test base; by arranging a transmission chain, a driving chain wheel drives a driven chain wheel to rotate intermittently through the transmission chain, then the transmission chain drives a to-be-tested power adapter to perform equal-interval transmission through a positioning piece, when the to-be-tested power adapter is conveyed to the position below a Z-axis electric push rod, transmission is stopped, and the Z-axis electric push rod pushes a sliding sleeve to move downwards; when the limiting pressing plate on one side of the sliding sleeve is located at a specified height above the to-be-tested power adapter, the limiting pressing plate stops moving downwards, then the to-be-tested power adapter is connected to a test system through the pulling and inserting mechanism, and after the to-be-tested power adapter is tested, the to-be-tested power adapter is disconnected through the pulling an