Neochrysocharis okazakii (Kamijo) is a dominant parasitoid species of the agromyzid leafminers in China. In this article, we review the biological characteristics of Neochrysocharis okazakii, including taxonomic status, distribution and field occurrences, host species, host feeding, reproduction, longevity, sex ratio, and the current use of this parasitoid in field against vegetable agromyzid leafminers. N.okazakii is a synovigenic, idiobiont and endoparasitoid that can kill the host by ovipositing and feeding on larval stage of the host; Meanwhile, the host preference for females is consistent with "host sizedependent sex allocation". This parasitoid has a widerange temperature adaptability and effective control potential of leafminer pests. It particularly controls Liriomyza sativae Blanchard and Liriomyza trifolii(Burgess), even at relatively high temperature conditions. In order to efficiently use this parasitoid in the filed, we propose that future research should focus on: （1) a comprehensive and indepth study of the bioecological and environmental adaptive capacity of the species; （2) hostfeeding behavior and physiological mechanisms; （3) largescale rearing techniques and various intensive release regulations consistent with local conditions; and （4) the cooperative control of pests and the competitive coexistence mechanisms with other agromyzid leafminers parasitoid speices.