Abstract: An uninterruptable lighting device with its supervisory function thereof comprises: a detachable charging base and a portable lighting body, both furnished with a charging recepticle located at its rear and front end respectively, said charging base consists of a power supply monitor circuit and a charging status monitor circuit, said circuits further includes a first indicator and a second indicator, both located at the rear ends of said charging base respectively, and said portable lighting body consists of a car charging monitor circuit, a third indicator, a regulator, a combination switch, a lantern lighting circuit, an emergency lighting circuit, a comparator for selecting lantern lighting or emergency lighting, a battery, a battery operation status monitor circuit, a fourth indicator, and a digital clock power supply.