The invention discloses an intelligent warning insulator for electrification of stay wires of an electric pole. The insulator comprises an intelligent warning bowl head, a composite rod core, an intelligent warning ball head and silicone rubber umbrella covers. The intelligent warning bowl head and the intelligent warning ball head are formed by embedded electrification intelligent warning device and metal members. The insulator is advantageous in that an electrification protection problem of an oblique stray wire is solved; and objectives of carrying out intelligent warning, remote positioning and active maintenance on the electrified insulator can be achieved.