The League of Nations was an international organization which was founded after the end of the First World War,with promoting international exchange, averting resolving international disputes, and maintaining world peace as its main aims. China at one time actively participated in many of the activities of the League. This book sets out from the perspective of the role of international co-operation, and carries out an in-depth examination of the interaction with regards to non-political issues between China and the League from 1920 to the 1940s. This interactive relationship had deep and far- reaching influence on the Chinese pursuit of modernization and raising China's international position.