Human activities, especially the irrational exploitation and utilization of resources, are one of the roots of the ecological environmental problems, so the ecological environment construction needs a series of auxiliary social, economic and institutional measures to ensure its smoothly fulfillment. The Lhasa area is being confronted with such major environmental problems as grassland degeneration, land desertification, shrubbery damage and wetlands degeneration. Besides the role of the natural environment itself, the main social and economic roots of these ecological environmental problems are the rapid population growth, the disordered economic expansion, the imperfect managerial system and the backward grassland construction. Based on the analysis of the above-mentioned causes, this article suggests such social, economic and institutional measures as the control of the rural population growth, the perfection of the grassland management, the acceleration of the pasture construction, the integration of agriculture and animal husbandry, the rational planning of land use for urban construction, to ensure the economic feasibility and social acceptability of the ecological environment construction. Human activities, especially the irrational exploitation and utilization of resources, are one of the roots of the ecological environmental problems, so the ecological environment construction needs a series of auxiliary social, economic and institutional measures to ensure its smooth fulfillment. The Lhasa area is being confronted with such major environmental problems as grassland degeneration, land desertification, shrubbery damage and wetlands degeneration. the main social and economic roots of these ecological environmental problems are the rapid population growth, the disordered economic expansion, the imperfect managerial system and the backward grassland construction. Based on the analysis of the above-mentioned causes, this article suggests such social, economic and institutional measures as the control of the rural population growth, the perfection of the grassland management, the acceleration of the pasture construction, the integration of agriculture and animal husbandry, the rational planning of land use for urban construction, to ensure the economic feasibility and social acceptability of the ecological environment construction.