Project execution is the guarantee of project success. This paper suggest the project plan system, project organization and governance structure, project execution culture and flow, the execution literacy of the project team are the key factors to affect the construction projects execution. Based on the study of the lean construction theory system, this paper also investigates the TFV, JIT, LPS and 5S can improve project execution from different perspective, so construction enterprises should carry out lean construction to improve project execution.

Property tax levying will make a huge impact on residential demand, residential supply, even the whole residential property market. It plays a vital role to the healthy and stable development of the residential property market. Although levying the property tax is very difficulty, it is the inevitable trend of development. In the long run, levying the property tax not only conform to the national interest, but also conducive to development of the real estate and the interests of residence buyer.

Energy saving of buildings in our country started from 90’s,which is so late that remaining at a low level .Although certain success has been achieved ,architecture reconstruction moves slowly on the whole ,especially for residential buildings. One of the reasons for this situation is lacking of money for energy saving reconstruction .Considering the enormous number of energy saving reconstruction buildings with the limited funds ,human resource and material resource, it is necessary to make a selection before the reconstruction ,weeding out the projects that are too poor to reconstruct in safety, functionality and energy-saving reconstruction, as well as the ones that have good energy saving performance and meet the energy efficiency design standards, which aren’t built for ages. The key point is to choose the existing buildings which are in urgent need of transformation in performance, economically rational and have feasible technic proceeding in batches with plans. Meanwhile, the reconstruction should use appropriate technology, combining with local climate characteristics.