In order to obtain porous hydroxyapatite(HA) microspheres with adsorption and biological functions,HA/gelatin microspheres were prepared by heterogeneous suspension method using nanohydroxyapatite(HA) powders as raw material.After 1 250 ℃ calcinations,the porous HA microspheres with diameters ranging 100~500 μm were successfully prepared.The morphology,size,phase composition,specific surface area and pore size of the microspheres were examined by optical microscope,scanning electron microscope(SEM),X-ray di...