A combustion device (100) includes at least one burner (30), a supporting assembly (10), and an infrared ray generation mesh (20). The at least one burner (30) includes a flame outlet (32); the front cover (12) of the supporting assembly (10) includes a flat cover plate (121) which has a plurality of holes (124); the infrared ray generation mesh (20) which is disposed on the supporting assembly (10) is corresponding to the flame outlet (32); the flames generated by the flame outlet (32) heat the infrared ray generation mesh (20) and the cover plate (121). The intensity of heating can be effectively increased by generating open fire and infrared rays and uniformly heating could be realized as well.