The problem of persistent icing on high-voltage line is very serious and cause severe losses. In order to solve the high-voltage line freezing, an automatic anti-icing robot (AAR) of high-voltage transmission line is designed in a new way. In this article, the technologies of take power online (TPO), mechatronics and network group control (NGC) are used in the designs. The automatic anti-icing robot (AAR) can work continuously in all weather and be controlled in large scale. In addition, a de-icing tool is designed specially. In conclusion, the automatic anti-icing robot of high-voltage transmission line can effectively solve the freezing of the high voltage line and has a large value of reference and promotion.