β-Tricalcium phosphate powders were prepared by nano ball milling and ultrasonic stirring process and compared with conventional process in this research. The purity and particle size of β-TCP powders were investigated by differential scanning calorimetry(DSC), X-ray diffraction(XRD), Fourier transform infrared spectroscope(FTIR), nanoparticle test, scanning electronic microscopy(SEM), transmission electron microscope(TEM) and X-ray fluorescence spectrum(XRF). The results reveal that the purity of β-TCP pow...