The emergence of the new liberal arts is deeply rooted in major changes of society. The data-intensive fourth scientific research paradigm has brought new breakthroughs to liberal arts research. Therefore, considering the construction of new liberal arts from a data perspective is of great significance. More specifically, the new liberal arts should follow the rules of information technology disenchantment, interdisciplinary integration, data-talented cultivation and resolving major issues. It is the advantage in the data acquisition, preservation, and dissemination that determines library's middle stage status in the construction of new liberal arts. Therefore, library data service could be improved from the DIKW model, including four levels of data, information, knowledge, and wisdom to empower the construction of new liberal arts.