Palm leaf beetle [Brontispa longissima (Gestro)] is an important Palmae plant parasitical pest. It invaded Hainan in 2002, then broke out, resulted in serious reduction of coconut and betel nut production, and seriously threatened the healthy and sustainable development of the industry of coconut and betel nut in China. At the same time, it posed a huge threat to the green ecological security and tropical natural landscape in the southern coastal areas. After researching for more than 10 years, the key technology system of emergency control and sustainable management were developed and integrated based on clarifying the occurrence and damage rule, and the invasion mechanism of the pest. The technology system has been widely used in the invasive area of the pest, and achieved remarkable benefits.