Abstract: Study on the predation of wood pecker of the 8 species on insects in poplar plantation were conducted periodically.It was found that the predation rate of wood pecker to the larvae of Paranthrene tabaniformis,Clania variegata,Anoplophora glabripennis and Apriona germari was 14.6%～75.7%,64.7%,31.3%～35.6%, 37.3%,to the pupae of Cnidocampa flavescens and Cerura menciana 50.0%～8.6% and 70.0%～95.5%,to the egg and ootheca of Lymantria dispar and mantids 33.3%and 56.1%～68.8% respectively.Some nymphs could still emerge from the ootheca.