The invention discloses a double-ultrasonic-high-frequency induction combined precision micro-connection device, which comprises a rack, a driving mechanism, a transmission mechanism, an upper ultrasonic vibration system, a high-frequency induction self-heating device, a lower ultrasonic vibration system, a workbench and a power supply, wherein the driving mechanism and the transmission mechanism are arranged on the rack; the upper ultrasonic vibration system is connected with the transmission mechanism; the high-frequency induction self-heating device is connected with the output end of the upper ultrasonic vibration system; the lower ultrasonic vibration system is arranged below the upper ultrasonic vibration system; the workbench is arranged above the lower ultrasonic vibration system; and the upper ultrasonic vibration system, the high-frequency induction self-heating device and the lower ultrasonic vibration system are connected with the power supply. According to the device, dual-ultrasonic vibration and heat energy are combined, so that the phenomenon that a workpiece to be connected is fused or damaged by over-temperature when only the heat energy is used is avoided, the problems of high unsoldering rate and incomplete insulating layer removal of ordinary ultrasonic hot pressure welding are also solved, the working efficiency is improved, and the production cost is lowered. In addition, the invention also discloses a method for performing double-ultrasonic-high-frequency induction combined precision micro-connection by adopting the device.