The library of the St Joseph Pontifical Seminary is renowned for its collection of books. It is one of the largest of its kind that exist in seminaries of Kerala. It is called ‘BIBLIOTECUM’ which means library in English. The library is divided into two parts one the Seminary library and the other belonging to the Pontifical Institute. The books are arranged serially and the issue and return of books are according to an internal system. The Reference hall of the library has a seating capacity of more than fifty. The old stack rooms and the archives too form a part of the seminary library which are used only for academic purpose.