We　report　the　complete　mitochondrial　genome　of　the　Small-Branded　Swift:　Pelopidas　mathias,　which　is　an　important　pest　of　rice.　The　total　length　of　the　circular　double-stranded　mitogenome　is　15,524　bp,　containing　13　protein-coding　genes　(PCGs),　22　transfer　RNAs　(tRNAs),　2　ribosomal　RNAs　(rRNAs)　and　a　non-coding　AT-rich　region　with　the　nucleotide　base　composition　of　40.07%　A,　40.83%　T,　11.59%　C,　and　7.51%　G,　showing　a　relatively　strong　AT　bias.　The　gene　order　and　organization　are　consistent　with　typical　Lepidoptera　species.　This　work　will　provide　molecular　data　support　for　the　study　of　the　phylogeny　and　evolution　in　the　family　Hesperiidae.