The invention relates an optical film structure with the diffusion and spotlight functions. It includes a base sheet and a diffused spotlight layer set on one side of the base sheet. The diffused spotlight layer has plural diffused spotlight units which are set one side of the diffused spotlight layer. The diffused spotlight unit has an ellipse arc surface which has a long axis and a short axis. By the surface curvature, the ratio between the long and short axis and the axial controlling, when the diffused spotlight unit refraction, the horizontal or vertical direction of the optical film hasthe two functions of spotlight and diffusion.