In Taiwan, open information of domestic publishing house is absent due to its nature of being unlisted company: private interview and questionnaire were the two major data sources of the related research. In this paper, we collect information about a selected publisher, cite publishing holding group, from the open data of “ Book Your Life” to analyze each publishing house’s publishing strategy to understand the relationship between selling performance and publishing strategies. We employ bestselling index to measure selling performance of publishing house and use HHI index to observe the publishing concentration of each publishing house. Our evidence demonstrates the improvement of selling performance caused by the decentralization of book types. Moreover, the popularity of the main type of published book affects selling performance of the publishing house.