Based on solid agglomeration or stacking of organic fluorescent dyes, which leads to fluorescence quenching, luminescence, and weakening of stability, the method of exfoliation and supramolecular assembly is used to prepare solid fluorescent ultra-thin film emitters. First, vermiculite nanosheets were prepared by shear exfoliation, and their particle size distribution was controlled at 30-300 nm. Then, vermiculite organic-inorganic vermiculite was obtained by layer-by-layer supramolecular assembly with organic fluorescent dyes (rhodamine 6G and rhodamine B). fluorescent film. It was found by comparative experiments that a uniform luminescent fluorescent film could not be obtained without adding vermiculite nanosheets. The SEM of the vermiculite organic-inorganic fluorescent film shows that the organic fluorescent dyes and vermiculite are evenly distributed, which overcomes the fluorescence quenching of the agglomeration or stacking of the organic fluorescent dyes, and realizes the controllable fluorescence brightness.