Abstract: 【Objective】 To investigate the parasitic natural enemy insect resources of Didesmococcus koreanus Borchsenius, a fruit pest in forest and describe their morphology and screen out the dominant parasitic wasps in the hope of providing theoretical basis for biological control of Didesmococcus koreanus Borchsenius in the future. 【Methods】 Adults of scale insect were collected and reared indoors to obtain parasitoid natural enemies.Afterwards, these parasitoids were identified and described.Parasitic wasps were raised indoors to record the lifespan of parasitic wasps and compare the lifespan of different parasitic wasps. 【Results】 It was found that there were four parasitic wasps of Didesmococcus koreanus Borchsenius: Encyrtus infidus Rossi, Blastothrix sericea Dalman, Coccophagus lycimnia Walker and Pachyneuron solitarium Hartig.These species accounted for 65.14%, 21.14%, 13.14% and 0.57% of the parasitoids, respectively.The number of Encyrtusinfidus Rossi and Blastothrix sericea Dalman were large, and they were the dominant parasitic wasps of Didesmococcus koreanus Borchsenius, with female and male ratios of 1.33∶1 and 1.31∶1, respectively.The maximal lifespan of Encyrtus infidus Rossi fmales was 18 days and that of males was 9 days; the maximal lifespan of Blastothrixsericea Dalman both sexes was 17 days. 【Conclusion】 There are abundant resources of parasitic wasps of Didesmococcus koreanus Borchsenius.In this study, 4 species are recorded, among which Encyrtus infidus Rossi and Blastothrix sericea Dalman were the dominant parasitic wasps.the sex ratio of the two dominant parasitic wasps was 1.3∶1, and there is no significant difference in female lifespan between the two dominant parasitic wasps.