Abstract：Reproductive characteristics has been analyzed for 4 geographic populations of Anastatus japonicus from Vietnam, Guangxi, Guangdong and Hainan. The results showed that the population in Vietnam has relatively higher fecundity of single female, oviposition span and net reproduction rate, but the finite increase rates in these four areas have little difference. This divergence might be caused by longer oviposition span of Vietnam population, which leads to fluctuated population without real increase. It can be concluded that there was no significant difference in fecundity features for 4 geographic populations of Anastatus japonicus. Key words：