In this work calcium phosphates were synthesized by modified wet-chemical precipitation method with several improvements of synthesis technological processing - calcium oxide activation and calcium hydroxide suspension homogenization in planetary ball mill. This allows to obtain synthesis product without impurities such as CaO. This CaO impurity is a usual drawback of conventional wet chemical precipitation route of preparation monophasic or biphasic bioceramics (hydroxyapatite and β-tricalcium phosphate). The aim of this work was to study the influence of wet chemical precipitation conditions such as temperature of synthesis (20°C, 45°C, 70°C) and ending pH value of synthesis (6, 7, 9, 11) on calcium phosphate phase composition and to characterize obtained phases. XRD was used to analyse phase composition and crystallinity. X-ray diffraction measurements (XRD, X’Pert PRO PANalytical diffractometer) using CuKα radiation were performed in the 2θ range between 20º and 90º. FTIR was used to determine the various functional groups. The infrared spectra of as-dried and sintered hydroxyapatite powders were obtained by Fourier transformed infrared spectrometry (FTIR, Scimitar Series model Varian 800) in the 4000-400 cm-1 range. Pure and thermal stable (up to 1300°C) hydroxyapatite phase was successfully synthesized at 70°C with ending pH 9. In elevated synthesis temperature (from 20°C to ≥45°C) hydroxyapatite forms at acid (6) and neutral (7) ending pH. In synthesis process at room temperature (20°C) with ending pH 7 a biphasic mixture of hydroxyapatite and β-tricalcium phosphate with unstable phase ratio is formed. By changing the ending pH value of synthesis (6, 7) and synthesis temperature it is possible to vary the hydroxyapatite and β-tricalcium phosphate phase composition in synthesis product.