Multilayer composite material and manufacturing method thereof

The invention discloses a multilayer composite material and a manufacturing method thereof. The multilayer composite material comprises at least one microstructure layer and at least one filling layer, a resin material is coated on a base material layer by using a roller mold with a microstructure, and after the resin material is cured, the microstructure on the roller mold is transferred to the base material layer to form the microstructure layers on the substrate layer; and resin materials are coated on the microstructure layers by using the roller mold with a smooth or rough roller surface, the concave areas of the microstructure layers are filled, the filling layers are formed after the resin materials are cured, and the steps are repeated to form the multilayer composite material which is formed by alternately stacking the microstructure layers and the filling layers and contains various microstructure shapes and any thickness. According to the multilayer composite material and the manufacturing method t