Abstract:Scientific and rational development and utilization of saline-alkali land is of great practical significance for maintaining national food security, ecological security and ensuring land for economic and social development. From the perspective of global management of natural resources, current situation of protection and utilization of saline-alkali land in the north of Weifang city has been innovatively investigated in this paper, successful paths, methods and modes of protection and utilization of saline-alkali land that have been tested in practice have been summarized,, including expanding agricultural production space, creating green ecological space, developing green ecological industry, expanding land space for industrial projects, and analyzing the existing difficulties. Some suggestions have been put forward to strengthen ecological protection and restoration, scientific reclamation of cultivated land and rational project construction.