Abstract: Face recognition is a demanding process for both brain and computer.The research of face recognition involves Artificial Intelligence,Machine Vision,Pattern Recognition,Lie-detector,Cognitive Science and Neuroscience.One of important topic in compurter science is how to automatically identify or verify a face of human from digital images or a video source.On the other hand,how the brain understands and interprets the human face is a particular important topic for neuroscience scientists.Here,we introduced the concept,research topics and progress of face perception,especially the functional model of face recognition,the discussion of face-special processes,inverted face effects and familiar face effects.We presented some new research direction in face perception:unconscious face processing and the perception of face micro-expression.