This report analyzes the health concept in the ecologie view, wich is essentialy related with the natural history of the disease.
This analysis studies the different levels of barriers, that are opposed y the development of the natural process disease, describing rapidly the points of health actions to the human being and the ecologie system, suggested by the national health system.
Is is considered how important is the primary health care asa liable means to decrease the demand of the second and third levels.
It is analyzed also the strategies to develop primary health care programs globally with other sections of development.
In conclusion, it is defined the nurse position in the primary health care, as a professional absolutely necessary to make possible the new method of health assistance to the family and community.