In the field of scientific research, professional English writing is getting more and more important. The goal of this course is to enhance the skills of professional English writing for the graduate students in the Department of Environmental Science and Engineering. The course designs include the followings; (1) to extend the writing practice for students and how to avoid common mistakes, (2) to learn the skills of professional English writing through the analytical guiding of international journal papers, (3) to study how to compose the abstract of thesis or dissertation correctly, (4) to be confident about writing professional papers through the extensive experience in writing short paragraphs.