Nowadays the community, the link and the communication mode of the people is various multiples, among them conjecture community is a more convenient and sound link method of kind.The book of schoolfellow is a conjecture community in a the exclusvie manifestation, real subsistence of kind all experience the super - amid the many people difficult with the student who forget the subsistence, but after graduating the many people forfeited the presence of the link,the book of schoolfellow from the actual sensus to resolve this problem, dum people according to the constant IP address to register the fineness associationist in website and book of the start the book of schoolfellow all and each other, can relaxed steer the link with the past's classmate, friend.