The invention provides an efficient binding tape cutting machine with an automatic feeding function. The efficient binding tape cutting machine comprises a workbench, a rotating mechanism and a movable cutting mechanism, wherein the rotating mechanism comprises a first rotating core shaft and a second rotating core shaft; a first driving motor and a second driving motor are separately mounted at the same ends of the first rotating core shaft and the second rotating core shaft; a slide rail parallel to the first rotating core shaft is arranged above the first rotating core shaft; a trolley is mounted under the slide rail; a supporting plate is arranged at the bottom of the trolley; and a first rolling bearing and a second rolling bearing which are separately matched with the first rotating core shaft and the second rotating core shaft are arranged on the supporting plate. The efficient binding tape cutting machine has the advantages that while supporting the end parts of the rotating core shafts, the supporting plate can automatically push raw roll cores to move to chucks along the rotating core shafts after the raw roll cores are mounted on the rotating core shafts, and automatic feeding is achieved; and the two rotating core shafts parallelly arranged up and down are adopted, the two raw roll cores can be cut at the same time, and production processing efficiency is doubled.