Considering spinel Li4Ti5O12 (LTO) and reduced graphene oxide (rGO) both have own unique natural performance advantages separately, so we utilize a facile hydrothermal route to fabricate a composite which is synthesized by the spinel LTO grown on the rGO sheets. Electrochemical tests reflect that the small ratio of rGO (about 6.2wt %) plays a key role in the improvement of the original morphology, structure and high rate performance. Compared with the previously published LTO/rGO composite, the newly synthesized LTO/rGO composite delivers a higher reversible special capacity of 196.4mAhg−1 at 1C and even exhibits good cycle stability with 98.1% retention after 100 cycles. What’s more, after cycling 500 times at 20C, the discharge capacity of composite retains 154.5mAhg−1 (96.5% retention), whereas the bare LTO is only 69mAhg−1 (79.7% retention). In addition, the Li4Ti5O12/rGO composite possesses fine high rate performance with the specific discharge capacities of 175.3mAhg−1(at 10C), 167mAhg−1 (at 15C) and 160.1mAhg−1(at 20C). Such electrochemical performance is attributed to its unique structure of conductive rGO sheets with clung Li4Ti5O12 particles.