In this paper, an amorphous carbon-coated mixed-crystal TiO2 nanoring array (C@TNTs) with good electrochemical properties was prepared by combining the hydrothermal carbonization method and anodizing method. Scanning electron microscopy (SEM), Raman spectroscopy (Raman), X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and electrochemical methods were used to characterize and analyze respectively the unmodified TNTs sample and the C@TNTs samples that obtained at annealing temperatures of 550 °C, 650 °C and 750 °C. The results show that the hydrothermal carbonization method can uniformly coat an amorphous carbon layer with a thickness of about 3.4 to 6.5 nm on the TiO2 nanotube array, but it will not affect its morphology and structure. The specific discharge capacities of C@TNTs-550, C@TNTs-650 and C@TNTs-750 are 2.83 mF·cm-2, 6.52 mF·cm-2and 1.48 mF·cm-2, which are 27, 62 and 14 times higher than the unmodified TNTs, respectively. What’s more, the introduction of a certain rutile phase in TiO2 nanotube array is conducive to the improve its electrochemical performance.