Abstract: With the rapid development of economy, a large number of high-voltage power transmission lines were routed across the forest, which brought the fire risks of forest fire. Now, many current studies focused on the potential impact of forest fires on transmission lines, but they ignore the fire hazards caused by transmission lines themselves. By introducing the current forest fire risk assessment and zoning research of transmission lines, the paper analyzed the advantages and disadvantages of satellite remote sensing, laser radar and wireless sensor monitoring technologies in transmission lines and their application status, so as to provide a new idea for transmission line designers and construction personnel to reduce the forest fire risk caused by transmission lines. It was also considered that most of the existing research focused on the online monitoring and early warning of forest fires on transmission lines, and the research on forest fire prevention design and construction measures of overhead transmission lines should be focused in the future to improve the pre-disaster prevention ability of transmission lines.