Global Manufacturing Network (GMN) is a new manufacturing system that has super manufacturing and servicing abilities. It is challenging traditional manufacturing conceptions. This paper describes and analyzes the driving forces of emergence of the concept of GMN， its evolution， members， and its theoretical bases. This paper also explores the knowledge transfer in the GMN， which consists of the mechanisms and processes of knowledge transfer in the GMN. Finally， the factors which contribute the knowledge transfer in the GMN are discussed.