Creating international first-class business environment is of great significance to implement the new development concept and achieve high-quality development. As high-level industrial agglomeration area in capital and forerunner of economic development，Beijing CBD should take the lead in impletementing the reform of business environment. Focusing on the construction of platform and standard，for example，building evaluation standard，enterprise credit supervision platform，government service platform，government enterprise communication platform，etc. Reform measures have been formed to build international first-class business environment in accord with its characteristics in Beijing CBD through practice.