An optical imaging lens set includes: a first lens element, an aperture stop, a second lens element, a third lens element, a fourth lens element and a fifth lens element, the first lens element with refractive power having a convex object-side surface and an image-side surface with a concave part in a vicinity of its periphery, the second lens element with refractive power having an object-side surface with a convex part in a vicinity of its periphery, the third lens element with refractive power having an object-side surface with a concave part in a vicinity of its periphery, the fourth lens element with refractive power, the fifth lens element with refractive power having an image-side surface with a concave part in a vicinity of the optical axis.