The optical recording properties and parameters of dithienylethene are investigated by the fluorescence spectrum conversed by ring-opening two-photon absorption and the fluorescence-quenching spectrum. Its nonlinear absorption coefficient is 3.46×10-13 m·W-1, the power density threshold of the two-photon absorption conversion is 107.36 GW·cm-2, and the power density threshold of the fluorescence quenching is 2.89 GW·cm-2. Based on these measurement parameters, a resolution of 60.0 nm in super-resolution optical storage is theoretically calculated and obtained, and a kind of recording and reading method for the information of the two-photon-dual-beam super-resolution optical storage based on diarylethene is designed. The results indicate that, the dithienylethene possesses the characteristics such as photo-induction-photo-inhibition, nonlinear absorption and fluorescence-quenching, and is an excellent optional material for the super-resolution optical storage.