Taking five stages of development（ nature

biology

human body

society and noesis） and five space plates as the research objects

five scientific systems are formed

which include natural science

bioscience

body science

social science and noetic science. Five scientific systems are applied to study human beings’ health. Thus

five knowledge structures and theory systems of great health form

which include natural environmental health science

biological health science

human health science

social health science and noetic health science. There are backbone branches and subdisciplines under each scientific system. These are the starting point for us to understand the objective world.