With graphene as the base, tetrabutyl titanate, lithium hydroxide and yttrium nitrate as raw material, cetyl ammonium bromide as the surfactant, the nanocomposite precursor was synthesized by solvothermal method, and then the yttrium-doped lithium titanate/graphene nanocomposite was synthesized by calcination under the atmosphere of nitrogen. The morphology, structure and composition of the nanocomposite were characterized by SEM, XRD, EDS, Raman Spectroscopy, etc. The results show that yttrium doped lithium titanate / graphene nanocomposites were formed by coating flake lithium titanate on graphene sheets. The nanocomposite was used as anode material of the lithium-ion battery, and its electrochemical properties were studied by cyclic voltammetry and constant current charge-discharge cycle method. The results show that under the charge-discharge current density of 100 mA/g, the initial charge-discharge capacity of the nanocomposite is 145.5mAh/g, the capacity fading is almost 0 after 100 cycles of charge-discharge cycle, 1.59% after 200 cycles, and 3.24% after 300 cycles, which is significantly improved compared with the graphite anode whose capacity retention rate is only about 80%. Further research found that the doping of yttrium and the compositing of graphene can reduce the polarization degree of lithium titanate electrode in the charge and discharge cycle and improve the cycle performance of the material.