The invention discloses a photochromic molecule and a preparing method and application thereof. The photochromic molecule comprises an azobenzene part and a Stenhouse adduct part. Due to the special molecular structure, the photochromic molecule has photoresponse activity no matter in an ultraviolet light area or a visible light area, and can be used for making a shading lens so as to protect eyes, or a photoprinter so as to print characters and patterns through light illumination. The photochromic molecule is obtained through chemical bonding of an azobenzene derivative containing a secondary amine group and a Stenhouse adduct containing a furan ring. The preparing method is easy to operate, reaction conditions are mild, cost is low, and the requirement of industrial production is met.