The invention discloses an optical imaging lens group, comprising an aperture, a first lens with positive refraction force, a second lens with negative refraction force and a third lens with negative refraction force from object side to image side in sequence, wherein the front and rear surfaces of the first lens are convex; the front surface of the second lens is concave and the rear surface thereof is convex; at least one surface of the second lens is provided with aspheric surface; the second lens is made of plastic materials; the front surface of the third lens is convex and the rear surface thereof is concave; at least one surface of the third lens is provided with aspheric surface; the third lens is made of plastic materials; in the optical imaging lens group, the number of the lens with refraction force is limited to three; the focal length of the whole optical imaging lens group is f; the focal length of the first lens is f1; the focal length of the second lens is f2; the focal length of the third lens is f3; the abbe number of the first lens is V1; the abbe number of the second lens is V2; the distance between the second lens and the third lens on the optical axis is T23; f/f1 is more than 0.8 and less than 1.8; the absolute value of f/f2 is more than 0 and less than 0.8; the absolute value of f/f3 is more than 0 and less than 0.7; V1 minus V2 is more than 20 and less than 38; and T23/f is more than 0.13 and less than 0.21.