The only way to sustainable development is from political proclamation to physical actions. Whether it may be poverty elimination or stable wealth accumulation; fairness among contemporaries or generations; strong or weak durative; economic growth and development or physical and ecological civilization; whether it may be saving resources and environmental friendliness, or revolving economy and revolving social construction, all resort finally to sustainable capital investment. Moral code directs sustainable development while capital investment is its action.Do it myself and do it now, and it is imperative to invest capital for the sake of sustainable development which needs both artificial and natural capital investments. However, natural capital investment is the essential investment, and sustainable investment obtains physical foundation only when it has been carried out. In addition, sustainable investment obtains solid physical foundation only when it has been turned into business investment by enterprises.From non-institution to institution, human society has spanned from no order to order. From informal to formal institution, it has spanned from passive to active development, and from artificial to natural resources capital investment, it is going to span from unsustainable to sustainable development. In order to promote sustainable development, law must conform to the evolving law of the human society, devise and arrangeautonomous partialityinstitution displayed by investors by studying the advantages of various institutions. Incite investment ardor; ensure investment returns and natural capital property institution which is the physical foundation of sustainable development to be at the center of institution devise and arrangement. Sustainable development