The utility model discloses a gradient structure calcium phosphate bioceramic, the material includes three kinds of different gradient crystal structure layers such as nanometer crystal structure superficial layer, nanometer / micron crystal structure transition layer, micron crystal structure central core. The material is that sintering temperature graded distribution field obtains to have the nanometer through setting up, the pottery of micron crystal gradient structural change. The nanocrystal layer of material gives the material unique biological activity, and the mechanical properties of material is guaranteed to the micron crystal layer, and the gradient transition is combined closely between the two, and nanometer / micron layer structural grouping is adjusted with the mechanical properties of matching materials with natural hard tissue to the accessible to satisfy many functional requirement mesh of biomaterial.