Lightning protection system

PURPOSE: A lightening protection system is provided to prevent damage to a person due to contact with the person by including a lightning wire and using a method for insulating with a support stand. CONSTITUTION: A lightning accepting band(110) is combined along an edge of a blade(14) of a windmill. A lightning wire(140) is electrically connected to the lightning accepting band. A connection part(120) is electrically connected between the lightning accepting band and the lightning wire. A first arcing horn(122) is perpendicularly projected to a tail end of the blade in an end of lightning accepting band. A second arcing horn(124) is arranged to be adjacent to the first arcing horn and is connected to the lightning wire. An insulating member is formed between the lightning accepting band and the blade.