Door lamp is a common lamp at the entrance of Nanwu in rural areas of China, which has many functions such as lighting, decoration, marking and so on. The door lamp uses energy-saving and environment-friendly LED lamp as the light source, and its design also has certain regional characteristics and national style. When building houses in rural areas, door lights are regarded as an indispensable part of housing construction, which can not only provide lighting, but also beautify the door environment and mark the home address.