A new photochromic diarylethene1-(3,5-dimethyl-4-isoxazolyl)-2-(2-methyl-3- benzofuran) perfluorocyclopentene (1a) has been synthesized. Its photochromic, fluorescent and optical strorage properties were investigated. The compound exhibited remarkable photochromism and clear fluorescent switches both in solution and in PMMA film. The results showed that the cyclization/cycloreversion process of the compound was determined to be the zeroth/first order reaction. This new photochromic system also exhibited remarkable optical storage character.