Ceramic fiber material is a kind of energy-saving material, which has the advantages of low heat storage, good heat insulation and light weight. However, the traditional aluminum silicate ceramic fiber in the production, use and disassembly process produces a large number of dust particles, which are easy to induce pathological changes after absorbing human lungs, and can not meet the requirements of environmental protection. Calcium magnesium silicon ceramic fiber is a new kind of green and healthy ceramic fiber, which has both fire resistance and heat insulation performance and ecological environment coordination.

In view of the current high temperature linear shrinkage of the calcium magnesium silicon ceramic fiber, which affects its use effect, and can not meet the high biological solubility and high use temperature of the fiber at the same time, the surface oxide coating treatment of the fiber has been carried out in the early stage, which has played a significant role in inhibiting the crystallization of the fiber and improving the use temperature. However, the coating of oxide on the fiber surface will inevitably affect its biological solubility, which is lack of relevant literature. Calcium magnesium silicon ceramic fibers were prepared by melt blowing method. The fibers were coated with titanium dioxide by heterogeneous nucleation method. The crystallization process and Biodegradation Behavior of the samples under different heat treatment conditions were discussed, and the influence mechanism of the coating treatment on the biological solubility of the fibers was identified, which provided a theoretical reference for improving the comprehensive properties of the biological soluble ceramic fibers.