Abstract: In accordance with the present invention, there is provided a workplace safety management system including: a plurality of node units (100) installed in a workplace area (1); a local server (200) that is movable and is connected to a management server (10) by wireless communication; and a tag (300) attached to a worker, in which the node unit (100) and the local server (200) is connected through a network system (400), the network system (400) includes: a long-range network (410) connecting the node unit (100) to the local server (200); and a mesh network (420) connecting the plurality of node units 100 to each other, and the mesh network (420) connects the node unit (100) to the local server (200).