Elastic reinforced flexible substrate

The utility model discloses an elastic reinforced flexible substrate, which comprises an insulating layer, a conducting layer and a film coating layer, the insulating layer and the film coating layer are adhered on the symmetrical side surfaces of the conducting layer, the insulating layer is provided with a reinforcing window, and an elastic reinforcing structure is arranged in the reinforcing window; the elastic reinforcing structure comprises a U-shaped connecting part, buckling parts which are arranged at the end parts of the U-shaped connecting part and are bent outwards, and an arched elastic sheet part which is connected between the two buckling parts; the U-shaped connecting part is inserted into the reinforcing window and is connected with the conductive layers on the two sides; a T-shaped clamping groove is formed in the end edge of the reinforcing window; the buckling part is inserted and clamped in the T-shaped clamping groove for positioning; and the reinforcing window is filled with glue to seal