A simple low-temperature solvothermal scheme has been developed to produce pure, well-controlled characteristics in terms of size, morphology, and monodispersity of barium titanate (BaTiO3) nanocubes. Characterizations of products were performed by XRD, TEM, HRTEM, EDS, and their sizes were 40-50 nm. The formation process of the BaTiO3 nanocubes was also discussed.