Research status of the xonotlite materials with emphasis on nano-xonotlite, impact factors and progress in the synthesis process are reviewed. The methods of nano-xonotlite synthesis include hydrothermal method, micro emulsion method, microwave assisted method and chemical precipitation method. The right amount of Mg, Na ions and chemical admixtures CaCl2 and Sr(NO3)2, ZrOCl2·8H2O, C2S and so forth can contribute to the formation of nano-xonotlite, and Al ions wili hinder the formation of the xonotiite product. Finally, the existing problems in the preparation and application of nano-xonotlite and future research are recommended.%综述了硬硅钙石材料制备的研究现状,重点对纳米硬硅钙石的制备方法、合成过程中的影响因素及应用进展进行了分析:合成纳米硬硅钙石的方法主要有水热法、微乳液法、微波辅助法、化学沉淀法；适量的Mg、Na离子及化学外加剂CaCl2、Sr(NO3)2、ZrOCl2·8H2O、C2S等有助于纳米硬硅钙石的生成；Al离子会阻碍产物硬硅钙石的生成.最后对纳米硬硅钙石制备及应用中存在的问题和今后的研究提出了建议.
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