With the rapid development of economic globalization, the competition of the real estate enterprises is increasingly fiercer, and the real estate market changes from seller's market to buyer's market; moreover, requests for technology, scale, function of the construction project, etc. is being more advanced, all of which put forward higher demand to real estate enterprises. Under this background, real estate enterprises must set up a more scientific and more normative management procedure to improve their competition; moreover, Lean Construction is an advanced construction system. It can improve the efficiency of construction, and realize enterprises' own goals finally. It is proved that Lean Construction is advanced and feasibility and it will be the direction of the construction development in the future. This essay defines Lean Construction and introduces some background information of Chinese real estate market at first, then puts forward three measures for improving the competitiveness of real estate enterprise; last but not least, this essay studies on the improvement of enterprise competitiveness based on the idea of Lean Construction from three aspects.