The invention discloses a high-speed lubricating performance testing machine for pre-grinding a friction pair and application thereof.The high-speed lubricating performance testing machine mainly comprises a fixing base, a workbench, an electric spindle, an anti-splashing box, a friction disk, an X-direction feeding device, a Z-direction feeding device, a clamping device, an opposite-grinding tool, a disk grinding device, a measurement system, a cutter alignment instrument and the like.After the surface of the friction disk is ground through the disk grinding device, the electric spindle drives the friction disk to rotate; after the surface of the friction disk is ground through the disk grinding device, a proper quantity of lubricating agent is placed in the anti-splashing box, the electric spindle drives the friction disk to rotate, the Z-direction feeding device and the X-direction feeding device drive the opposite-grinding tool and the friction disk to make contact with each other for friction testing, pressure between the opposite-grinding tool and the friction disk is kept constant in the testing process, and the testing system acquires data in the process.By means of the high-speed lubricating performance testing machine, high-speed friction testing stability and accuracy can be effectively improved.