HA (hydroxyapatite) bioceramic gradient coatings are prepared on titanium by laser cladding, the microstructure and phases analysis of laser clad HA bioceramic coating are studied by means of electron probe microanalysis (EPMA) and X-ray diffraction (XRD). The results show that when the laser power is 600 W and the scanning speed is 3.5 mm/s, the compact and good-bonding HA bioceramic gradient coatings can be obtained, and the microstructure is cellular and dendritic crystal which is similar to that of human hard tissue. The coatings consist of the phases of HA, α-Ca2P2O7, Ca3(PO4)2 and so on, and the Ca/P ratio in bottom coating is near to that in HA, but in upper coating it is a little higher. If laser power rises, porous structure is produced which is favor to the embedding and growing of bone tissue, but the Ca/P ratio in HA coatings increases and the biocompatibility decreases. If the scanning speed is faster, the coating will not melt enough, so the microstructure is loose and the coating strength descends.