An optical imaging lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, which have refractive power and are sequentially arranged from an object side to an image side of the optical imaging lens assembly along an optical axis. The first lens and the third lens both have positive refractive power. The fifth lens has negative refractive power. A total effective focal length f of the optical imaging lens assembly and an entrance pupil diameter EPD of the optical imaging lens assembly satisfy f/EPD