Recently face recognition is attracting much attention in society of network multimedia information access .Areas such as network security, content indexing and retri and video compression benefits face recognition technology because “people” are the centre of attention in a lot of video .Network access control via face recognition not only makes hackers virtually impossible to steal one s “password”, but also increases the user –friendliness in human-computer interaction.-Recently face recognition is attracting much attention in society of network multimedia information access .Areas such as network security, content indexing and retri　and video compression benefits　face recognition technology because “people” are the centre of attention in a lot of video .Network access control via face recognition not only makes hackers virtually impossible to steal one s “password”, but also increases the user –friendliness in human-computer interaction.