Anoplophora chinensis (Forster, 1771) (Coleoptera: Cerambycidae) is an important quarantine pest causing significant economic losses. It was detected in hazelnut orchards in Trabzon province in 2017 and an eradication program continues. In this study, the population level and biology of the pest were determined by rearing it and conducting periodic surveys in hazelnut orchards in Trabzon province Maçka district between 2020 and 2021. It has been revealed that the adult emergence of A. chinensis takes place in the last weeks of June and adults are found in nature until the end of August. The oviposition period continued from the end of June to the beginning of September and the larval stage of A. chinensis was observed throughout the year. The pupal stage was observed in May and June. With this study, the biology of A. chinensis in Türkiye has been revealed in detail for the first time and obtained data guides the eradication and surveillance studies.