Only in this way，the multi-reason and uncertainty of Chinese economy fluctuation can be explained。The paper thinks the cause of Chinese economy fluctuation are the outside impact and the inside conduct mechanism。The study concretely analyzes the outside and inside and related factors that stir up fluctuation of the period。The research focuses on the policy and technology from the outside。The inside factors are analyzed by the angle of view of investment，consumption，import and export and currency etc。The viewpoint of this book is that the causes of Chinese economy fluctuation are the joint result of outside impact and the inside conduct mechanism。
In the meantime，the book initially discusses the relativity between the Chinese economy fluctuation and the international economy fluctuation under the international environment of Chinese economy，that is the exterior impact，then it analyzes the international econo-mic reasons which make the transformation period Chinese economy fluctuation。The research of transformation period economic fluctuation in this book is placed in the plicated and changing environment of international economy。It is considered Chinese economy had already integrated into international economic system and it is directly facing the impact of international trade and finance and transferring risk of crisis after entry into WTO。So it is ne-cessary for Chinese macroeconomy to build up an early warning and adjusting mechanism。The research will provide a valuable reference for farther research on the economic fluctuations and policy making of Chinese transformation period。It makes up the shortings of the research on this issue at pre-sent。It gives a discussion on theories and research methods，provides a new angle for it and breaks through the past theoretical frame of economic fluctuation。