Construction of urban green space is an effective carrier of urban ecological environment system，and has an irreplaceable position in the urban ecological environment. At present，the urban resident population continues to grow，and urban ecological pressure intensifies rapidly. How to arrange the space structure reasonably in limited urban space，and how to give full play to the comprehensive function of urban green space is becoming a key research topic in today’s society. On the basis of current situation of green space application in China，the article analyzed types of species，application frequency especially for Beijing’s situation. And then，the author had a research on improving to China’s urban green landscape optimization model based on finding out problems of green space construction in Beijing.