Taking the data of documents from CNKI database as the research sample, this article obtains a series of knowledge maps for the haze research of China. The results indicate that the research strengths are scattered. Although there are some collaborative researchers, but there is lack of long-term cooperation among the partners. The obvious core research strength in China has not been constructed. The main focuses of current haze research are mostly on the following issues:the causes of haze, the protection in haze whether, the harm of haze, the governance of haze and the early warning of haze.

haze  /  mapping knowledge domain  /  visualization research