Compound bone cement with high inorganic components as well as preparation method and application of compound bone cement

The invention discloses compound bone cement with high inorganic components. The compound bone cement contains a solid-phase component and a liquid-phase component, wherein the solid-phase component contains P(MMA-co-MPS) surface-modified hydroxyapatite, polymethyl methacrylate, beta-tricalcium phosphate and benzoyl peroxide, and the liquid-phase component contains methyl methacrylate and dimethyl terephthalate; the mass volume ratio of the solid-phase component to the liquid-phase component of the compound bone cement is 1 to (2.5-3.5); and the sum of P(MMA-co-MPS) surface-modified hydroxyapatite and methyl methacrylate is 35%-40% of weight of the solid-phase component. According to the compound bone cement, tricalcium phosphate (beta-TCP) and P(MMA-co-MPS) surface-modified hydroxyapatite are compounded, and meanwhile, the proper modification degree of p(MMA-co-MPS) to hydroxyapatite is adjusted, so that the mechanical performance of the raw materials is guaranteed, meanwhile, the biological activity of the