The purpose of the present invention is to provide a mine management system and a mine management method which are capable of maintaining the safety of manned vehicles or workers, while limiting reduction in mine productivity. This mine management system (1) in which an unmanned vehicle operates in a mine operation area comprises: an entry determination unit (66) which determines on the basis of position data of a mobile body other than the unmanned vehicle, whether the mobile body enters the operation area; an abnormality monitoring unit (67) which initiates abnormality monitoring including abnormalities in the communication state and/or in the position detection state of the moving body, on the basis of the operation of an input device provided on the mobile body; an entry prohibited zone setting unit (12C), which sets an entry prohibited zone into which entry of the unmanned vehicle is prohibited, said zone containing the position of the mobile body, and which activates an expansion function of the entry prohibited zone when an abnormality has been detected by the abnormality monitoring unit; and an alert device control unit (70) which activates an alert device provided on the mobile body when a mobile body enters the operation area and when the input device is determined as not in operation.