Abstract: Based on the systematic investigations in mango orchards in Fujian Province from 2010 to 2012,10 species of scale insects were collected which belonged to 9 genera,3 families.Aulacaspis tubercularis had caused common and serious harm,3 species caused middle harm and 6 species caused light harm,respectively.The results showed that the natural enemy resources were rich in mango orchard.Encyrtidae(eg.Arrhenophagus chionaspidis) and Aphelinidae(eg.Aphytis sp.) were two crucial parasitoids while Coccinellidae,Cybocephalus nipponicus and Chrysoperla sinica were main predators for scale insects.It is of great significance to protect and make good use of natural enemies to control scale insects.