Flow controllable epoxy resin prepreg and preparation method thereof

A flow controllable epoxy resin prepreg and a preparation method thereof are disclosed. The preparation method comprises the following steps: individually preparing an epoxy resin component, a flow control component, and a curing component, adding the epoxy resin component and the curing component into the flow control component to prepare a flow controllable epoxy resin system with a viscosity more than 4 Pa.s, and finally compounding the system with an enhancing material so as to obtain the flow controllable expoxy resin prepreg; wherein the epoxy resin component can be single epoxy resin or a composition of multiple epoxy resins and accounts for 10 to 90% of the total weight of the system; the flow control component is a prepolymer or mixer of an epoxy resin modifier and epoxy resin and accounts for 5 to 60% of the total weight of the system, and the curing component is composed a single curing agent or a mixture of multiple curing agents or curing agents and promoters, and accounts for 2 to 30% of the tot