Conventional frame-based image sensors suffer greatly from high energy consumption and latency.Mimicking neuro-biological structures and functionalities of the retina provides a promising way to build a neuromorphic vision sensor with highly efficient image processing.In this review article,we will start with a brief introduction to explain the working mechan-ism and the challenges of conventional frame-based image sensors,and introduce the structure and functions of biological ret-ina.In the main section,we will overview recent developments in neuromorphic vision sensors,including the silicon retina based on conventional Si CMOS digital technologies,and the neuromorphic vision sensors with the implementation of emer-ging devices.Finally,we will provide a brief outline of the prospects and outlook for the development of this field.