The invention discloses a digital power stringing and tightening device, which comprises a base, wherein four idler wheels are evenly arranged at the periphery of the lower surface of the base; the middle parts of two sides of the base are vertically connected with fixing brackets; deep groove ball bearings are arranged at the top ends of the fixing brackets; a main rotating shaft matched with the deep groove ball bearings is arranged between inner rings of the two deep groove ball bearings; an electromagnetic booster is arranged at one side of the main rotating shaft; a take-up reel matched with the main rotating shaft sleeves the other side of the main rotating shaft; and a key groove is formed in the joint of the main rotating shaft and the take-up reel. The take-up reel is driven by the electromagnetic booster, and is stable in the rotating process, easy to accurately control, energy-saving and environment-friendly; electric wires are placed between two-way wire clamping plates; and an air cylinder pushes a piston rod, so that a one-way wire clamping plate moves and slides along the direction of a slide rail in cooperation with the two-way wire clamping plates on slide blocks; stringing and tightening of a plurality of electric wires can be simultaneously finished; and the efficiency is improved.