The scale of fixed assets investment has been frequently beyond control over the past 30 years in China. Although the extents and rationales are different from time to time, it is harmful to economic stability and adjustment. Under an in-depth economic reform with a focus on cities at present, it is extremely important to understand and respect the regularity of fixed assets investment and effectively control its scale so as to maintain sound economic development, to carry out the reforms smoothly and to promote the economic development and construction with mutual benefit.