Abstract: The technical property rights of the "sunlight greenhouse" are owned by China. This greenhouse structure is well suited to Chinese conditions and is widely used in the Northern regions of China. There have been a lot of papers, publications and standards written on the greenhouse, but precise definitions of the greenhouse, including content and methodology, are multifarious and lack precision and consensus. In this paper, definitions from different sources and literatures were compared and analyzed on the basis of greenhouse characteristics. As a result, a more precise definition, in both Chinese and English, was suggested.