Abstract: Plant polyphenols has many important role such as strong antioxidant, inhibition of enzyme activity,antibacterial, anti mutagenic,anti-inflammatory,anti radiation and lowering blood pressure activity.Extracting polyphenols from the northeast wild hazelnut which is rich and importantin resources for utilization of hazelnut resources.The advances of plant polyphenols and research situation of hazelnut polyphenol at home and abroad were summarized in this paper to provide reference for the development and utilization of Corylus.