Method for synthesizing nano hydroxylapatite material with biological activity

The invention provides a method for synthesizing a nanometer hydroxylapatite bioactive material. The method comprises the following steps: firstly, synthesizing a nanometer hydroxylapatite water dispersion liquid by a liquid phase method; secondly, adding an orthosilicate compound, a catalyst, a water soluble organic solvent to the nanometer hydroxylapatite water dispersion liquid; stirring the mixed solution for 2 to 48 hours with the pH value of between 8 and 11 at a temperature of between 20 and 90 DEG C; and finally, washing a reaction product for at least three times to obtain nanometer hydroxylapatite coating silicon dioxide on the surface. The method can prepare the silicon dioxide coated nanometer hydroxylapatite bioactive material with a nuclear shell structure, wherein the grain size, the structure and main compositions are close to a bone nanometer apatite crystal of natural bone; therefore, the material has good bionic performance of the nanometer hydroxylapatite structure and high bioactivity of bioglass, and can be a perfect raw material for preparing a bone restoring material and a bone packing material used for medical treatment.