中文摘要：

首先对沪深股市建筑业板块中企业的多角化经营程度进行测量,发现目前这些企业的多角化程度不高;进而采用计量经济学方法对其多角化经营程度与企业的成长性指标进行了实证分析,发现目前多角化程度低的企业的成长性更好,而多角化程度高的企业的净利润增长相对更快;最后结合实际情况对本文结论进行了解释。

英文摘要：

Firstly, this diversification of listed construction companies is measured, the result shows that it is at a low level. Then, by using mathematical research approach, a further investigation is given on the relationship between diversification and growth ability. It shows that the growth ability of companies with lower diversification is comparatively higher as a whole. Finally, the conclusions are explained from the view of facts.