A new Diels-Alder Adduct of C60 with 1,1’-biindene (CB) has been synthesized. The Langmuir trough study of this new fullerene derivative indicates that floating film could form monomolecular thick film at the air/water interface at lower concentration, and can be well transferred the floating mixed CB and arachidic acid film onto substrates using the Langmuir-Blodgett (LB) technique. In the case of the mixed film, high quality films with thickness of up to 50 layers could be readily built up. The absorption variation with film thickness at 255nm was measured, indicating good LB deposition up to 50 layers.