, belongs to Bivalvia, Unionidae, and Gonideinae, is a burrowing bivalve uniquely distributed in China. In this study, the complete mitochondrial genome of MG was sequenced and determined. The complete mitogenome of MG is 16,392 bp in total length, consist of 22 genes, 13 protein-coding genes (PCGs), and 2 genes. The overall base composition of the MG mitogenome is 36.90% A, 23.85% T, 27.09% C, and 12.16% G, respectively, exhibits a similar AT bias (60.75%) feature to other invertebrate bivalve mitogenomes. The phylogenetic analysis that MG clustered in genus Solenaia. This result provides useful data to the conservation and sustainable utilization of MG and other invertebrate mussels.