The invention discloses an ultrasonic broaching tool, a high-efficiency precise ultrasonic broaching device and a broaching process thereof. An existing broaching tool and an existing broaching machine are not provided with integrated information acquisition devices and are short in service life. The ultrasonic broaching tool comprises an ultrasonic transducer, a detection assembly and a broachingtool body. The detection assembly comprises a detection substrate, a laser transceiving belt, an image sensor, an axial pressure sensor, a first radial pressure sensor and a second radial pressure sensor. The high-efficiency precise ultrasonic broaching device comprises a broaching machine body, an optical grating and the ultrasonic broaching tool. The broaching machine body comprises a broachingmachine drive assembly, a broaching machine body, a broaching machine guide rail and a fast positioning and clamping device. A broaching tool three-directional vibration value, a broaching tool axialtensile force, a broaching tool displacement value, and a workpiece dimension based on an image are measured. Real-time detection data is provided for a working condition feedback loop and a stop control loop of a control system. The service life of the broaching tool can be effectively prolonged.