The following links should be paid attention to in the prevention and control of pine wood nematode disease: ① Quarantine should be closed. This is an important means to prevent the introduction or long-distance transmission of pine wood nematodes. (2) To achieve "early treatment, minor treatment and radical cure". In other words, in the case of small area and light harm, do a good job in monitoring, early detection and early treatment, make great determination and make great efforts to prevent and control the epidemic. Eliminate pine wood nematode disease in the bud. ③ Clean up dead trees in time. "Timely" means clearing all dead trees before the emergence of vector insects, and "thorough" means treating the wood, branches and roots of diseased trees with pesticides to kill nematodes and vector insects and prevent them from spreading again.