A light guiding system, comprising: a first light guiding element, disposed on a first plane of an accommodation space; and a second light guiding element disposed on a second plane of the accommodation space, wherein the first plane and the second plane are not the same plane; wherein the second light guiding element includes a plurality of light guiding structures, each light guiding structure is a light-transmissible material and has a first surface, which is a plane, and a second surface, wherein a plurality of first light beams becomes a plurality of second light beams after passing through the first light guiding element to enter the accommodation space, the first surface faces the second light beams, a part of the second light beams are guided to the second light guiding element and a part of the second light beams from the first light guiding element enters the light guiding structure and becomes a plurality of third light beams after being refracted by the first surface, and part of the third light beams are emitted out after being refracted by the second surface, the second light guiding element has a base body, characterized in that the second plane of the light guiding structures is a curved surface; each of the plurality of light guiding structures has a reflection surface that is an interface connecting the base body used for reflecting light beams from the first surface to the second surface; and the first light guiding element includes: a film base having a first side and a second side, the second side being opposite to the first side; and at least one microstructure located on the first side or the second side of the film base, a cross section of the microstructure being substantially triangular. a first light guiding element, disposed on a first plane of an accommodation space; and a second light guiding element disposed on a second plane of the accommodation space, wherein the first plane and the second plane are not the same plane; wherein the second light guiding element includes a plurality of light guiding structures, each light guiding structure is a light-transmissible material and has a first surface, which is a plane, and a second surface, wherein a plurality of first light beams becomes a plurality of second light beams after passing through the first light guiding element to enter the accommodation space, the first surface faces the second light beams, a part of the second light beams are guided to the second light guiding element and a part of the second light beams from the first light guiding element enters the light guiding structure and becomes a plurality of third light beams after being refracted by the first surface, and part of the third light beams are emitted out after being refracted by the second surface, the second light guiding element has a base body, characterized in that the second plane of the light guiding structures is a curved surface; each of the plurality of light guiding structures has a reflection surface that is an interface connecting the base body used for reflecting light beams from the first surface to the second surface; and a film base having a first side and a second side, the second side being opposite to the first side; and at least one microstructure located on the first side or the second side of the film base, a cross section of the microstructure being substantially triangular.