Book presents the content of the concept of Quality of Life (QOL), the main criteria characterizing the Quality of Life of the population, as well as the characteristics of the institutional system that best represents the Quality of Life. It presents the principles of Quality of Life assessment, the presentation of Quality of Life through indexes, then presents the Quality of Life assessment in Armenia with the index methodology (which can also be used to assess the Quality of Life in other countries), as well as the peculiarities of Quality of Life in international practice.The book also presents the impact of the main factors determining the economic development in the Republic of Armenia on the Quality of Life of the population, as well as the assessment of the regression between the economic growth and the Quality of Life of the population, the main ways to improve the Quality of Life.