Abstract: The purposes are to investigate the species of arthropod and their dominance in flue-cured tobacco field of Longyan, and to provide a basis for controlling tobacco pests by interplanting garlic. A systematic investigation was conducted in the experimental field of tobacco substation of Tobacco Company in Longyan City from 2008 to 2009. In 2011- 2017, the authors conducted a random investigation on the arthropod populations to verify the systematic investigation from 2008 to 2009. The results showed that 11501 individuals of arthropods were obtained, and they belonged to 2 classes, 11 orders, 44 families and 65 species. The herbivore functional group had 33 species, only Myzus persicue (Sulzer) was the dominant specie among them. There were 9 species belonging to parasitoid functional group, and only Aphidius gifuensis Ashmead was a frequent specie (2009) or occasional specie (2008). There were 16 species belonging to predator functional group. There were 7 species belonging to neutral functional group, and only Chironomus oryzae Mats. was the dominant specie. The results of the random investigation in 2011-2017 were consistent with the results of the systematic investigation in 2008-2009.