The main purpose of this study was to prepare and characterize porous Hydroxyappitite (HAp) with controllable pore size using different additions of synthetic polymer. Porous HAp was doped with MWCNTs with different concentrations to enhance its mechanical properties to match human hard tissues engineering. In-situ synthesized of pure nano-HAp, PVA and MWCNTs were analyzed using different characterization techniques.Phase analysis was analyzed by the room temperature powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) is particularly useful for the identification of chemicals substances that are either organic or inorganic.The size of the prepared nano HAp powder detected using high resolution transmission electron microscopy (HR-TEM).Morphology and microstructure of porous ceramics wereexamined using scanning electron microscopy (SEM).The stress-strain test was examined to determine mechanical properties for the prepared samples. Experimental results indicated that the 10% PVA is found to impregnate the porous ceramics effectively with uniform size distributionswith pore sizes around 100nm.The physical and mechanical analysis were clearly enhanced after MWCNTs additions to porous HAp.According to the previous such porous materials should be suitable materials for load sharing tissue-engineering applications