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It is becoming increasingly clear that the development of construction emphasizes on life quality which corresponsively conjugates transition of domestic community and economy. Therefore, the usage of public space of housing, demonstrates their high quality and luxurious design. However, the conflict between the development of housing and environment has been carried out by concept of life cycle assessment and field study in this research. The conclusions and suggestions have also been solidified.
In this study, the public space of medium-rise and high-rise housing has been extensively investigated and can be divided into three phases according to from 1997 to 2008 completion date of construction. The results and suggestions are summarized as follows：
1、Interior decoration in public space of medium-rise and high-rise housing
The decoration of interior common room is exclusively based on wooden pattern, which combines diverse materials with an elegant touch. However, each phase shows different materials and qualities. For example, A case（phase Ⅰ）, paint accounts for 44％, while usage of wooden material is 75％ in E case（phase Ⅱ）. In addition, the content of wooden materials for interior decoration hit the largest scale and accounts for 49％ in G case（phase Ⅲ）.
2、Influence of interior decoration in public space of medium-rise and high-rise housing on environment
The results show that the impact of interior decoration and floor area planning of public space on environment increases annually. The refurbished unit area of public space shows different amounts of carbon dioxide emission. A case（phase Ⅰ）, E case（phase Ⅱ）, and G case（phase Ⅲ） are 40.00, 42.90, and 42.93 (kg/m2), respectively. The decrease of carbon dioxide emission in G case can be ascribed to spacious area which lowers the emission value. In addition, if these common rooms are designed for audio-visual functionalities and entertainment, the value of carbon dioxide emission is higher. For example, reading room is 45.88 (kg/m2) in case, while audio-visual room is 44.29 (kg/m2) in E case and audio-visual central is 55.09 (kg/m2) in G case. Furthermore, the emission of carbon dioxide from wooden materials is higher than stone and brick, which holds the second highest carbon dioxide emission rate.
3、Strategy of refurbishing in public space of medium-rise and high-rise housing
It is desirable to use low power, recyclable and reassembling functions as new refurbishing materials. Furthermore, adopting the concept of green building instead of high power, to deduce the influence of environment, provides an alternative plan. Therefore, the reuse of space and shorter construction time has to be taken into account in order to save energy and materials when planning public space.
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