The invention aims at preparing a hydrogel material which has thermo-sensibility, is organically and inorganically hybrid and is of a three-dimensional interpenetrating polymer network structure, by means of good mechanical properties and biocompatibility of the material, the requirements that a clinical injection embolizing agent is good in mechanical property, complete embolization can be achieved, X-ray absorbing capacity is high, an operation is easy to operate are satisfied, and application of the material to the clinical embolism treatment field is achieved.