A bottom lighting module comprises a PCB, a reflection sheet and plurality of light-emitting diodes (LEDs). The PCB has a first face, a second face opposing to the first face and a opening connecting spatially the first face and the second face. The reflection sheet is disposed on the first face and has a plurality of holes. At least two holes are located in a range of the opening. Each LED is disposed in one hole and the corresponding opening. Each LED comprises a light-emitting portion and a base. The base further comprises at least two electrodes connected to the second face of the PCB.