An optical imaging lens includes a first lens to a sixth lens and correspondingly forms a first focusing state and a second focusing state. The first lens element has positive refracting power, a periphery region of the image-side surface of a fifth lens element is concave, an optical axis region of the image-side surface of the sixth lens element is concave, a periphery region of the image-side surface of the sixth lens element is convex. Lens elements included by the optical imaging lens are only six lens elements. The rear lens group enables the optical imaging lens to form a first focusing state and a second focusing state to satisfy TTL*ΔHFOV/ΔG≤19.500 degrees.