This text has introduced the foreign relevant water right theory and water right system,and explained bank right,priority to take up right and public water right system especially,and has carried on brief evaluation and analysis,has offered reference for establishing the system of water right of our country to realize the sustainable utilization of water resource.

This thesis interprets disorder of urban land market with the theory of property right, it summarize some experiences and lessons.

By taking the air quality, the sound, the light and the thermal conditions in indoor environment as the objects of study and according to the PD (predicted dissatisfied) indexes established by measured data, an indoor environment evaluation is made based on entropy weight theory.

Western economists credit Coase with the foundation of the theory of property rights.

The author also discusses ways of reforming the mining rights system, by using foreign property rights theory as reference.

Applying the theory of new institutional economics, including Coase theorem, state theory, property rights theory and ideology theory, this paper analyzes the connotation and characteristics of Chinese business incubator, discusses the developing direction and choosing mode of Chinese business incubator.

By absorbing these thoughts critically and using materialism, Karl Marx made a conclusion on the property rights at that time, and then came out the property rights theory systematically.