This study investigates two video streaming giants, Netflix and IQiyi, resorting to finding where they should improve through analyzing financial reports and the review comments from both of its apps. Statistical analysis and a deep textmining method have been applied accordingly. Findings from financial reports reveal that Netflix has more potential in its diversification of revenue streams, and IQiyi should enlarge its business scale. Text-mining results demonstrate that both platforms need to improve in the fields of content and app features. Netflix should find ways to maintain and continue its high-quality series content, while IQiyi should expand its content library. Both platforms should work on technical problems, among which Netflix can also improve in features of personalized lists and subtitles. In addition, the subscription issue remains to be a significant problem for IQiyi, including the high price, too many layers of payment, and auto-renewal contract system. This research offers an alternative approach and a more coherent understanding of Netflix and IQiyi's deficiencies. Methodologically, it further contributes by illustrating how review comments could be effectively applied in video-streaming related studies.