Combined with the actual situation of China's construction enterprises, based on the growth-medium-sized enterprises evaluation method published by "Research for Small Medium-sized Enterprises Development" joint research projects group, and by using fuzzy clustering analysis to analyze the eight evaluation index systematically which determine the enterprises growth, the sorting of evaluation index effectiveness is realized, and the index system to effectively evaluate the construction enterprises growth is established. Combined with the industry condition of construction enterprises, try to use the double standard of resources (scale) and time to divide construction enterprises growth stage, and to build four unary function model to make a quantitative research on construction growth process.