The invention provides a high-performance expanded hybrid fiber concrete material for wet joints, and a preparation method thereof. According to the present invention, based on the practical problems of the wet joint in the whole simply supported-continuous structure system, high-strength hybrid fiber reinforced concrete is used as a joint material to provide the hybrid effect at different levels and different load applying stages so as to well inhibit and restrict the development of cracks, wherein the development of the concrete micro-crack is limited by releasing the concentrated force of the micro-crack in the concrete with Durafibers, the development of the macro-crack is limited by steel fibers, and by mixing the Durafibers and the steel fibers, a variety of mechanical properties of the whole concrete can be improved in the case of the low doping volume, such that the concrete can have characteristics of high bending resistance, high toughness, high impermeability, high fatigue resistance and the like so as to prevent the occurrence of diseases.