WORKPLACE VIOLENCE IN HEALTH CARE：A CONTINUOUS GLOBAL PROBLEM AND ITS CHARACTERISTICS IN CHINA Workplace violence is a persistent problem in health care worldwide. The victims are usually nurses and workers in the emergency department. The academic debate, as it develops overtime, would allow us to gain an integral insight about this problem. The author searched the related research and debate articles in English in PubMed （www.pubmed.conl） dated from 1990 to 2016 Figure 1 . In total, 1899 items with the keywords of＂workplace violence,＂ 600 items with ＂workplace violence healthcare,＂ 786 items with ＂＇workplace violence nursing,＂ and 279 items with ＂workplace violence emergency＂ （there is some overlap between these four groups） have been published.