In a method for determining a compaction degree of a surface segment, the following steps are provided: passing over the deposited layer of the surface segment to be compacted, determining positional data of a position of the compacting machine, defining a current partial surface of the surface segment of the deposited layer, the current partial surface possibly consisting of a plurality of subsegments which have already been passed over, measuring and/or picking up parameters at the position of the compacting machine, and storing the parameters together with the position data, assigning the parameters to the current partial surface or to all subsegments of the current partial surface, computing, from the parameters, a current compaction degree for the current partial surface or each subsegment of the current partial surface.