Abstract: Emergency planning zone(EPZ) should be established around the nuclear facility in advance to ensure that the effective protective actions would be taken promptly for the public and environment in case of nuclear accident. The IAEA evolution of EPZ and the characteristic of PAZ and UPZ were introduced systematically. The new development of IAEA EPZ after Fukushima nuclear accident was elaborated and the PAZ and UPZ change of nuclear facility of threat category I was analyzed. The implication was summarized as references to improve nuclear emergency work in China.