羟基磷灰石(HA)是目前生物相容性最好的生物活性陶瓷。其涂层的制备方法也成为材料学科研究的热点之一。激光熔覆作为表面改性的新技术，在制备HA生物陶瓷涂层方面显示出独特的优越性，所得涂层质量明显优于其它制备技术。对激光熔覆HA涂层的组织性能特点及影响因素进行了综述，详细分析了工艺参数、反应物配比、稀土元素及梯度涂层等因素对涂层质量的影响，展望了该项技术的应用前景。

Hydroxyapatite(HA)is one of bioactive ceramics with best bioactivity at present. The techniques for producing its film have become one of the hot points in the material research. As a new technique for changing the surface properties,laser cladding shows the unique advantages for producing HA bioceramic coatings. The quality of the coating is much better than that of the coating produced by other techniques. The characteristics of microstructure and properties of the coating by laser cladding and their influencing factors are reviewed. The effects on the qualities of the coating of laser parameters,reactant composition,rare earth element and gradient coating are analyzed in detail. The future application trend is also prospected.