In the present work, we report a suitable approach for the preparation of CaTiO₃ micro-particles via the hydrothermal method without the need for surfactants and using high concentrations of Potassium hydroxide as mineralizer. Phase and structural investigation by X-ray diffraction (XRD) and infrared spectroscopy (FT-IR) respectively, confirm the formation of calcium titanate single phase without the presence of secondary phase after being colloidal solution in an autoclave for 3 hours at temperature of 250 °C with 96.33% of crystallinity. Also according to scanning electron microscope (SEM) and transmission electron microscope(TEM) images morphology of particles were perfectly porous micro-cubes with uniform distribution and they were with approximately dimensions of 2 µm and about 200 nm in diameter. As a matter of fact, the hydrothermal method guarantees the production of CaTiO₃ micro-particles with desired morphology for commercial applications. In addition, uniform particles, size distribution and purity of samples are highly dependent on the applied hydrothermal condition.