Tianyige was among China’s first major historical and cultural ancient books sites to be protected at the national level. It is famous for its collection of ancient Ming Dynasty books. These ancient books are mostly bag packed. However, some of the books are butterfly packed, line packed, rough packed and fold packed. Tianyige is also one of the first national repair centers for ancient books. To make full use of the collection, the center has focused on the conservation of Ming Dynasty books and established a method for repair of this kind of book. Based on an evaluation book damage and paper testing results, a plan was proposed and executed for each damaged book.