A Fresnel liquid crystal lens panel, comprising: a first substrate comprising a first transparent substrate and a first electrode formed on an inner side of the first transparent substrate; a second substrate comprising a second transparent substrate arranged relative to the first transparent substrate and a plurality of spaced-apart, strip-shaped second electrodes formed on an inner side of the second transparent substrate; a liquid crystal layer filled in a space between the first and second substrates, and divided into a plurality of lens regions, liquid crystal molecules within each lens region being deflected at different angles to form a Fresnel liquid crystal lens when different driving voltages are applied to respective second electrodes within the lens region; and a plurality of insulating barrier blocks, each of the plurality of insulating barriers being located at an inner side of the second substrate and arranged between two adjacent side lobes (431, 432) of the Fresnel liquid crystal lens, and the insulating barrier blocks are provided on the second electrodes between two adjacent side lobes (431, 432) of the Fresnel liquid crystal lens, characterised in that: the shape of the cross-section of each of the insulating barrier blocks is an isosceles trapezoid satisfying: H 2 < H, and L 22 ≤ L 21 < L, wherein H is cell thickness of the Fresnel liquid crystal lens panel, L is width of the second electrode, H 2, L 21, and L 22 are height, bottom side length and top side length of the isosceles trapezoid, respectively. a first substrate comprising a first transparent substrate and a first electrode formed on an inner side of the first transparent substrate; a second substrate comprising a second transparent substrate arranged relative to the first transparent substrate and a plurality of spaced-apart, strip-shaped second electrodes formed on an inner side of the second transparent substrate; a liquid crystal layer filled in a space between the first and second substrates, and divided into a plurality of lens regions, liquid crystal molecules within each lens region being deflected at different angles to form a Fresnel liquid crystal lens when different driving voltages are applied to respective second electrodes within the lens region; and a plurality of insulating barrier blocks, each of the plurality of insulating barriers being located at an inner side of the second substrate and arranged between two adjacent side lobes (431, 432) of the Fresnel liquid crystal lens, and the insulating barrier blocks are provided on the second electrodes between two adjacent side lobes (431, 432) of the Fresnel liquid crystal lens, characterised in that: the shape of the cross-section of each of the insulating barrier blocks is an isosceles trapezoid satisfying: H 2 < H, and L 22 ≤ L 21 < L, wherein H is cell thickness of the Fresnel liquid crystal lens panel, L is width of the second electrode, H 2, L 21, and L 22 are height, bottom side length and top side length of the isosceles trapezoid, respectively. the shape of the cross-section of each of the insulating barrier blocks is an isosceles trapezoid satisfying: H 2 < H, and L 22 ≤ L 21 < L, wherein H is cell thickness of the Fresnel liquid crystal lens panel, L is width of the second electrode, H 2, L 21, and L 22 are height, bottom side length and top side length of the isosceles trapezoid, respectively.