In recent years the academic journals, conference proceedings and series of books published at home and abroad were published and distributed in two kinds of forms, electronic and paper. The electric version of some of the books and journals have gone back to the first volume of more than a hundred years ago. It has been quite convenience that the researchers consult the science and technology data, so when librarians subscribe to books and journals they consider ordering two version if possible , that is e+p . But in many cases, because of a lack of funds and the low rate of paper use, the library just order an electric version (e only). So the library services of the digital and network have gradually replaced the traditional print services in the ways and means. The print document is getting less and less attention, so it hastens the demise of its potential. This paper proposes some opinions on this question, and we hope that the librarians can pay attention to and keep the published astronomical literature, it is a precious historical and cultural heritage in the astronomical community we must hand down from generation to generation.