An agricultural field management system includes a map data recording section having a field map layer for recording field map data, a field work data recording section having a machine-type-specific field work layer for recording field work data generated for each work implemented by various kinds of farm work machine on the field, a data management section 60 for executing data management on the field map data and the field work data at a common coordinate position, and an evaluation section 70 for effecting farming evaluation of the field based on the field work data.