Abstract: Psyllids are important pests on woody plants, especially cause serious damage to fruit trees such as citrus, pear and wolfberry, and thus pose a great threat to fruit production. As an important natural control factor of psyllids, the parasitic wasps play an extremely important role in the management of psyllids. At present, nearly 100 species of parasitic wasps of psyllids have been discovered and recorded, but only a few species can be artificially propagated in large quantities. It is necessary to strengthen the investigation and research on the parasitic wasps of psyllids, especially the artificial propagation technology of important parasitic wasps, so as to provide new technologies and products for the biological control of psyllids.

Key words: psyllid, parasitoids, biological control