An optical imaging lens assembly comprising eight lens elements (E1-E8), the eight lens elements (E1-E8) being, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element, and each of the eight lens elements (E1-E8) having an object-side surface facing toward the object side and an image-side surface facing toward the image side; wherein a total number of lens elements in the optical imaging lens assembly is eight, the first lens element has negative refractive power in a paraxial region thereof, the object-side surface of the first lens element is concave in a paraxial region thereof, the object-side surface of the first lens element has at least one inflection point in an off-axis region thereof, the seventh lens element has negative refractive power in a paraxial region thereof, the image-side surface of the eighth lens element is concave in a paraxial region thereof, the image-side surface of the eighth lens element has at least one inflection point in an off-axis region thereof, and at least one of the object-side surface and the image-side surface of at least one of the second lens element, the third lens element, the fourth lens element, the fifth lens element, the sixth lens element and the seventh lens element is aspheric; wherein an axial distance between the sixth lens element and the seventh lens element is T67, an axial distance between the seventh lens element and the eighth lens element is T78, an axial distance between the object-side surface of the first lens element and an image surface is TL, a maximum image height of the optical imaging lens assembly is ImgH, and the following conditions are satisfied: 1.0 < T 67 + T 78 / T 67 − T 78 < 6.0 and 1.0 < TL / ImgH < 2.0. wherein a total number of lens elements in the optical imaging lens assembly is eight, the first lens element has negative refractive power in a paraxial region thereof, the object-side surface of the first lens element is concave in a paraxial region thereof, the object-side surface of the first lens element has at least one inflection point in an off-axis region thereof, the seventh lens element has negative refractive power in a paraxial region thereof, the image-side surface of the eighth lens element is concave in a paraxial region thereof, the image-side surface of the eighth lens element has at least one inflection point in an off-axis region thereof, and at least one of the object-side surface and the image-side surface of at least one of the second lens element, the third lens element, the fourth lens element, the fifth lens element, the sixth lens element and the seventh lens element is aspheric; wherein an axial distance between the sixth lens element and the seventh lens element is T67, an axial distance between the seventh lens element and the eighth lens element is T78, an axial distance between the object-side surface of the first lens element and an image surface is TL, a maximum image height of the optical imaging lens assembly is ImgH, and the following conditions are satisfied: 1.0 < T 67 + T 78 / T 67 − T 78 < 6.0 and 1.0 < TL / ImgH < 2.0.