This biannual conference, EACAT, has been held since 2007 at Seoul. Before then there had been annual China-Japan-Korea(CJK) Conference on Algebraic Topology for a few years. The conference was expanded to East Asia as Singapore, Taiwan, Vietnam topologists began to participate in 2007. Although this is a regional conference, a few European and American topologists also particiapted every year. The EACAT was held in 2008 at Singapore, 2009 at Hanoi, 2011 at Tokyo and 2013 at Beijing.