The invention relates to a method for matching the lost moment of an internal combustion engine (2) in a hybrid drive system. Matching of the lost moment is implemented by means of a matching parameter. The method includes the steps of setting running points of the internal combustion engine on the basis of the preset engine moment (M) and preset rated rotating speed (nSoll); adjusting the rated rotating speed (nSoll) of the internal combustion engine (2) through a rotating speed adjuster (11); determining the continuous adjusting deviation of the rotating speed adjuster (11); and determining a matching value of the matching parameter according to the continuous adjusting deviation of the rotating speed adjuster (11).