The invention belongs to power technical field and especially relates to a power line wind rope fastener. The power line wind rope fastener is characterized by comprising a fixing frame, a movable roller device, a stopping component, a connection plate, a first fixing element, a second fixing element, a third connecting plate, a movable connecting component, a rope passing assembly, and a rope fixing assembly, solves problems of long wind rope fastening time, high cost, and insecurity of a power line wind rope fastener in the prior art, and has beneficial effects of simple structure, smooth wind rope adjusting process, short adjusting time, flexible application, low labor cost, and safe and reliable construction.