Abstract: By making a painstaking carding and analysis of the related historical materials and texts, the thesis inspected the inheritance of Beijing Period “Yusi” from Lu Xun Editing Period in style and inner spirits which has long been ignored, and cleared up the fundamental historical facts Yusi′s hopeless process of variation and depression. Finally, the thesis provided an analysis of the background and cause from Yusi′s unfortunate circumstances and coterie separation.