There are several research gaps in combining innovation ecosystem theories with the platform theories. From the perspective of platform strategies in the context of innovation ecosystem (IE), the present study examined two typical cases observed in the automobile manufacturing industry. The main research findings are the illustrations of the two types of platform strategies (featured either in mutualism symbiosis or in predation symbiosis) of IE in a sustainable ecologic environment of an emerging market (China). Furthermore, the evolution mechanisms and process models of these platform strategies are revealed and discussed. The research findings may contribute to the theoretical development in the context of IE, meanwhile may shed some lights for the future research about the incremental improvement and/or radical innovation in a certain industrial ecology of the emerging markets.