In our country, the sales volume of the newsprint paper hasn't risen markedly owing to the domestic downward economy for the last few years. but its volume has increased steadily each year. And now the imported newsprint paper has only about 1 percent of the Japanese market share in spite of the recent effort to penetrate Japanese market. This is because newspaper publishing companies in Japan aren't satisfied with the quality of the imported newsprint paper, as the foreign paper companies fail to meet the severe quality requrements set by the Japanese customers. Conversely Japanese paper manufactures have continuously improved the quality in response to their quality requirements, and now in consequence of it, the domestic newsprint paper is superior to the imported paper in quality. This article describes a summary of the development of the newsprint paper manufacturing technology in the last twenty years in Japan.