An image display method, running on a head-mounted display device and comprising: obtaining an original distorted image; establishing a rectangular image that shares a same aspect ratio with the original distorted image; characterized in that the method further comprises: performing anti-distortion processing on the rectangular image to obtain a pillow shaped image, which is an image shaped like a rectangular pillow; establishing a spherical model according to a horizontal field angle and a vertical field angle of a shooting lens, and inscribing the pillow shaped image to the spherical model, spherical center angles of corresponding directions formed by intersections of the pillow shaped image and the spherical model in a horizontal direction and a vertical direction being separately the horizontal field angle and the vertical field angle of the shooting lens; radiating, from a spherical center of the spherical model, multiple rays to connect to four sides of the pillow shaped image, to construct a cone similar to a horn mouth; and lengthening the horn mouth along a radial direction of the spherical model, to intersect with a spherical surface of the spherical model, intercepting a part of the spherical model, and using the intercepted part of the spherical model as a shaped cambered curtain; mapping the original distorted image to the shaped cambered curtain, to complete image rendering to obtain a rendered image; and displaying the rendered image. obtaining an original distorted image; establishing a rectangular image that shares a same aspect ratio with the original distorted image; characterized in that the method further comprises: performing anti-distortion processing on the rectangular image to obtain a pillow shaped image, which is an image shaped like a rectangular pillow; establishing a spherical model according to a horizontal field angle and a vertical field angle of a shooting lens, and inscribing the pillow shaped image to the spherical model, spherical center angles of corresponding directions formed by intersections of the pillow shaped image and the spherical model in a horizontal direction and a vertical direction being separately the horizontal field angle and the vertical field angle of the shooting lens; radiating, from a spherical center of the spherical model, multiple rays to connect to four sides of the pillow shaped image, to construct a cone similar to a horn mouth; and lengthening the horn mouth along a radial direction of the spherical model, to intersect with a spherical surface of the spherical model, intercepting a part of the spherical model, and using the intercepted part of the spherical model as a shaped cambered curtain; mapping the original distorted image to the shaped cambered curtain, to complete image rendering to obtain a rendered image; and displaying the rendered image. performing anti-distortion processing on the rectangular image to obtain a pillow shaped image, which is an image shaped like a rectangular pillow; establishing a spherical model according to a horizontal field angle and a vertical field angle of a shooting lens, and inscribing the pillow shaped image to the spherical model, spherical center angles of corresponding directions formed by intersections of the pillow shaped image and the spherical model in a horizontal direction and a vertical direction being separately the horizontal field angle and the vertical field angle of the shooting lens; radiating, from a spherical center of the spherical model, multiple rays to connect to four sides of the pillow shaped image, to construct a cone similar to a horn mouth; and lengthening the horn mouth along a radial direction of the spherical model, to intersect with a spherical surface of the spherical model, intercepting a part of the spherical model, and using the intercepted part of the spherical model as a shaped cambered curtain; mapping the original distorted image to the shaped cambered curtain, to complete image rendering to obtain a rendered image; and displaying the rendered image.