From the perspective of German Antitrust Law，“market power”，as an abused object，is not limited to the category of “market dominant position”，also includes “market dominant position”，“relative or superior market power”，and “paramount significance for competition across markets”. In this context，the abuse of market power has been included in the typological regulatory paradigm of “triadic governance” in Germany. The regulatory mechanism for the abuse of market dominant position originated from the classic American antitrust legal system，while the regulatory mechanism for the abuse of relative or superior market power plays a complementary and auxiliary role in the previous mechanism. After the human society entered the era of digital economy，the emergence of super platform enterprises posed a serious challenge to the antitrust legal system born in the industrial economy era. On this basis，the German legislature set up a regulatory mechanism for the abuse of market power by operators with paramount significance for competition across markets，which constitutes one of the institutional tools for Germany to strengthen antitrust supervision in the digital economy era. As a result，the Federal Cartel Office can impose special obligations on operators with paramount significance for competition across markets.