According to the background of views on further strengthening of the urban planning and construction promulgated by the state council, the new open area of the status quo was explored at home and abroad in recent years. And four typical residential areas in A city were taken as examples, combined with investigation in A city, and the pros and cons of the open area were preliminary analyzed. And by using the simulation software to simulate plot open, a variety of factors under the condition of MATLAB mathematical model was established. And before and after the impacts on the surrounding area in the open were quantitatively compared. According to the results, and puts forward the following suggestions: Building the open district should adhere to the peoplecentered principle, should from the laws and regulations, regulatory system, social environment and other aspects to obtain, reasonable planning and construction of the community. The results can provide reference for the construction and management of open community in A city of liaoning province.