Composite sandwich structure and manufacturing method thereof

The invention belongs to the technical field of composite material manufacturing, and discloses a composite material sandwich structure and a manufacturing method of the composite material sandwich structure. The composite material sandwich structure comprises a first surface layer, a core material layer, a reinforced core layer and a second surface layer which are sequentially arranged in a stacked mode, the reinforced core layer is made of flexible cloth, a plurality of flow guide grooves are evenly distributed in the flexible cloth, and the flexible cloth comprises fiber non-woven fabric and a plurality of small particle balls evenly distributed on the fiber non-woven fabric. The composite material sandwich structure can solve the problems of poor impact resistance and easy structure damage, and the low-speed impact resistance of the composite material sandwich structure is improved on the basis of not increasing the manufacturing difficulty and not changing the processing property of the structure. 本发明属于复