Developing efficient catalysts with good recyclability is of great importance for its practical applications. In this study, a novel magnetically retrievable nanocomposite ([email protected]) was synthesized for catalyzing hydration reaction. Active Au nanoparticles are deposited on core-shell [email protected], which are further supported by a two-dimensional reduced graphene oxide (RGO) platform. The prepared [email protected] was proven to be efficient as well as recyclable. An excellent catalytic performance, with 97% yield towards the hydration of phenylacetylene, was achieved for the catalyst in dioxane. Remarkably, the catalyst can be readily recycled through magnetic separation and achieved superior catalyst recovery and stability after seven cycles without any metal leaching. This work provides a strategy to fabricate recyclable and durable catalysts for industrial applications.