Baidu, Alibaba and Tencent all have big data, and the data of the three major Internet giants are used to optimize the operational effects of their own businesses. From this perspective, their data value application scenarios are similar. However, due to different business and business models, their data assets are different, and their future big data strategies are also different. Especially from the perspective of the openness and cooperation of big data, Baidu and Alibaba are relatively more open. For Internet companies that attach importance to the openness and cooperation of big data, what they are most looking forward to is to exchange more data with more traditional industries through the strategy of big data openness, so as to better enrich their online and offline data, form online and offline data collaboration, and expand new business models, such as intelligent hardware and big data health.