In this study, the complete 16,065 bp mitochondrial genome of Eysarcoris aeneus was determined from China using next-generation sequencing technology. It consists of 13 protein-coding genes, 22 tRNAs, 2 ribosomal RNAs, and a control region. Among them, 23 genes were located on J-strand, and the other genes (nad5, nad4, nad4L, nad1, trnQ, trnC, trnY, trnF, trnH, trnP, trnL1, trnV, 12S rRNA, and 16S rRNA) were located on the N-strand. The phylogenetic tree was constructed using MrBayes method based on the 13 protein-coding genes (PCGs) showed the present species clustered within the Pentatomidae. The complete mitogenome data would be useful for further study of Pentatomoidea and Pentatomomorpha.