New vertical high voltage insulator protection device belongs to high voltage?transmission lines protection field, has solved the rainwater and has made the high -voltage line insulator produce electric arc, has carried the big problem of power consumption. This protection device is including installing top protection mechanism and the bottom protection mechanism in insulator top and bottom metal contact position respectively, top protection mechanism includes the top safety cover and installs the top toper buckler in top safety cover upper end, bottom protection mechanism includes the bottom safety cover and installs the bottom toper buckler in bottom safety cover upper end. But the production of the blue arc discharge phenomenon of high -voltage line insulator root is avoided in the contact of this protection device effective?isolation insulator and rainwater, prevents the high -voltage line insulator and by the puncture condition, avoids causing equipment trouble, the loss of can reduce current carrying on the road on line, and the energy saving, simple structure, simple installation, the important hanging top insulating ability of high -voltage line is more powerful, can effectively reduce high -grade voltage working line failure number.