A lighting apparatus includes a light-guiding plate and a lighting unit. The light-guiding plate includes a light-incident surface and a light-emitting surface. The lighting unit includes a first light source, a second light source and a circuit board. The first and second light sources are disposed on the circuit board, and the light emitted by the first and second light sources enters into the light-guiding plate through the light-incident surface and exits the light-guiding plate through the light-emitting surface. A first distance from the first light source to a reference line of the light-incident surface is not equal to a second distance from the second light source to the reference line.