Human welfare depends upon our ability to satisfy the vital needs, i.e. provide everything necessary for supporting the human life. At the same time, human needs implied by the necessity of close interaction between man and natures (need for natural resources) are dictated by aesthetic and other contacts with nature. These needs may be called ecological. The problems of environmental protection are the most important among the first-priority problems of the society. At the present moment they are becoming more and more global. Industrial development results in increasing of ecological problems which, in their turn, result in deterioration of the human living environment. On the other hand the society has reached the stage of development which allows setting new economic and political tasks. The constantly growing part of population count on improvement of their welfare and is ready to pay for preservation of the environment, for improvement of the aesthetic standards of living. In the paper the authors determine some conception aspects of estimation of subjective well-being of a person and indicate their connection to the phenomenon of ecological well-being.