The “YLN” region of Tibet is the center of the politics, economy and culture of Tibet Autonomous Region and the main developmental region in short term. In this region, the agricultural resources are abundant, the production basis is good, and the agricultural development potential is great. This paper mainly reviews the quantity, quality and developmental potential of various land resources and suggests the ways and countermeasures for rational utiliaztion and protection of land resource in order to provide scientific bases and beneficial opinions for the sustained and steady development of agriculture in this region.