Abstract: To summary the research on the health effect of haze event or haze days in China. The articles on the health effect of haze event or haze days in China published in 2000-2016 were retrieved and collected through databases, such as CNKI, Wanfang, CQVIP, PubMed, Web of Science, Springer Link and Science Direct etc. A brief description on the occurrence of haze pollution and the 2013 haze event in China was made in this paper. The results on the number of outpatient or emergency room visit, emergency first aid, hospitalization, the risk of death and other health problem in haze event and haze days were analyzed. The knowledge on the problem of haze was still limited and its effect on human health has not been explored fully.