Abstract: Jiaduo alternating current pest forecast lamp was used to investigate the population quantity and dynamic of the imago of Scarabaeidae in the planting areas of peanut in Hui'an County for the four years in a row from 2013 to 2016. In 2019, the field efficacy trial was carried out by using 10% diazinon granules and 10% imidacloprid aqueous suspension concentrate to prevent and control the white grubs of Scarabaeidae larvae. The results showed that there were 6 species of Scarabaeidae in the spring peanut field of Hui'an in southern Fujian, including Holotrichia sauteri Moser, Serica orientalis Motschulsky, Maladera oratula Fairmaire, Anomala corpulenta Motschulsk, Holotrichia oblita Faldermann and Anomala virens L.. Among which, Holotrichia sauteri Moser, Maladera oratula Fairmaire, Serica orientalis Motschulsky, Anomala corpulenta Motschulsky were the dominant species. The first three species had one generation a year, and were mostly unearthed from March to April; while Maladera oratula Fairmaire had two generations a year, and the first generation was mostly unearthed in May while the second generation was unearthed in August. When the spring peanut seeds were sown, 10% imidacloprid aqueous suspension concentrate was used for the seed dressing, and 10% diazinon granules was used for mixing soil and broadcasting during the florescence. At this time, the control effect of the white grubs of Scarabaeidae larvae was significant, reaching 90.04% and 90.46%, respectively.