A vehicle dual-functional lighting module, comprising: a light guide layer having a top surface, a bottom surface and two opposite side surfaces; a plurality of lateral solid-state light sources, located on the two opposite side surfaces of the light guide layer in two strips and emitting a first light, and a plurality of direct light solid-state light sources, located below the light guide layer and emitting a second light selectively; the second light is emitted toward the top surface, wherein the plurality of direct light solid-state light sources is arranged between the-two strips of lateral solid-state light sources; wherein the two opposite side surfaces of the light guide layer are formed with a plurality of concave parts for respectively receiving the plurality of lateral solid-state light sources; wherein the top surface of the light guide layer has a plurality of upper microstructures (14, 14a), the position of each one of the plurality of upper microstructures (14, 14a) corresponds to each one of the plurality of direct light solid-state light sources; each one of the plurality of upper microstructures (14, 14a) forms an illuminating surface (141, 142), and the illuminating surface (141, 142) has an illuminating surface angle relative to the top surface (1 Qt) of the light guide layer, so that the illuminating surface (141, 142) presents a curved surface with difference of height; wherein the bottom surface of the light guide layer is disposed with a plurality of lower light-diffusion structures (13, 13a, 13b, 13c, 13d, 13e, 13f) for reflecting the first light toward the top surface of the light guide layer; wherein the bottom surface of the light guide layer is opposite to the top surface of the light guide layer; wherein the bottom surface of the light guide layer is formed with a plurality of light entering sections for respectively receiving the plurality of direct light solid-state light sources; wherein a path of the first light is emitted from the lateral solid-state light sources, entered into the light guide layer from the two side surfaces, reflected by the light-diffusion structures (13, 13a) on the bottom surface, toward the top surface of the light guide layer, and out the top surface to present a surface-illuminated surface light source; wherein a path of the second light is emitted from the direct light solid-state light sources in the light entering section, toward the top surface 10t, and then out the illuminating surface (141, 142) of the light-diffusion structures (14, 14a), so as to present an intensified light source for enhancing illumination, wherein the position of the intensified light source is located within the surface light source, so as to selectively enhance the illumination intensity locally of the surface light source. a light guide layer having a top surface, a bottom surface and two opposite side surfaces; a plurality of lateral solid-state light sources, located on the two opposite side surfaces of the light guide layer in two strips and emitting a first light, and a plurality of direct light solid-state light sources, located below the light guide layer and emitting a second light selectively; the second light is emitted toward the top surface, wherein the plurality of direct light solid-state light sources is arranged between the-two strips of lateral solid-state light sources; wherein the two opposite side surfaces of the light guide layer are formed with a plurality of concave parts for respectively receiving the plurality of lateral solid-state light sources; wherein the top surface of the light guide layer has a plurality of upper microstructures (14, 14a), the position of each one of the plurality of upper microstructures (14, 14a) corresponds to each one of the plurality of direct light solid-state light sources; each one of the plurality of upper microstructures (14, 14a) forms an illuminating surface (141, 142), and the illuminating surface (141, 142) has an illuminating surface angle relative to the top surface (1 Qt) of the light guide layer, so that the illuminating surface (141, 142) presents a curved surface with difference of height; wherein the bottom surface of the light guide layer is disposed with a plurality of lower light-diffusion structures (13, 13a, 13b, 13c, 13d, 13e, 13f) for reflecting the first light toward the top surface of the light guide layer; wherein the bottom surface of the light guide layer is opposite to the top surface of the light guide layer; wherein the bottom surface of the light guide layer is formed with a plurality of light entering sections for respectively receiving the plurality of direct light solid-state light sources; wherein a path of the first light is emitted from the lateral solid-state light sources, entered into the light guide layer from the two side surfaces, reflected by the light-diffusion structures (13, 13a) on the bottom surface, toward the top surface of the light guide layer, and out the top surface to present a surface-illuminated surface light source; wherein a path of the second light is emitted from the direct light solid-state light sources in the light entering section, toward the top surface 10t, and then out the illuminating surface (141, 142) of the light-diffusion structures (14, 14a), so as to present an intensified light source for enhancing illumination, wherein the position of the intensified light source is located within the surface light source, so as to selectively enhance the illumination intensity locally of the surface light source.