Abstract: Exploration of forest management technology and the prevention and control of forestry pests are enhanced，and it can promote stable development of forestry economy.Therefore，in the new era，based on construction of eco-state，construction of forestry economy should be paied more attention and prevention and control forestry pests measures should be explored by technology of afforestation，so as to provide good support for development of forestry economy.Based on actual situation of Qinghai province，measures of afforestation technology to prevent and control harmful pests were studied，and it tries to provide corresponding technical support for development of forestry economy.