A lighting module includes a light source, a heat sink, a case, and a fan. The light source has a light emitting surface and a bottom surface opposite thereto. The heat sink is disposed at the bottom surface of the light source and includes a heat sink mass having a heat dissipation surface, wherein the heat dissipation surface is opposite to the bottom surface. The case is disposed to the heat sink and has a module airflow inlet and a module airflow outlet. The fan is disposed to the case or the heat sink for driving airflow to sequentially pass through the module airflow inlet, the heat sink, and the module airflow outlet. The case is capable of making the flowing direction of the airflow passing the module airflow outlet the same as the light emitting direction of the light emitting from the light emitting surface.