Afterwards open access of jounrals, scientific data and knowledge repositories, open book is a new approach to open publishing. There are multiple driving factors push academic book to be open access. Moreover, when the way of paying changed from authors pay to crowd funding by institutions, libraries takes more roles in the open publishing of academic book. There are a lot of influences to libraries through open publishing of academic book, such as libraries must pay close attention to dynamic state of publication, must proactive to cooperate with publishers, and must build indexes or platfroms for open book.