This article introduced current situation of acidification of modern literature and synthetically compared domestic and international deacidification preserving methods. The author made constructive proposals based on the characteristics of acidification of modern literature and sever condition. The author suggests our country concentrate strength on developing a self - renovate practical technology of paper deacidification as soon as possible, set up scientific and long - term preserving planning of paper deacidification and keep up with the work by steps, emphasises, and stages. The author also suggests manufacture and application of acid - free paper should be positively promoted when the problems of acid paper are being solved.