The theory of Task-based Approach (TBA), an influential language teaching and learning theory, was put forward by lan?guage teaching scholars and the second language acquisition researchers based on long-period study and practice. They contend that it is important and useful to make full use of tasks in the classroom. The argument mentioned as above has had a great impact on the means of English teaching and studying in language learning. Nowadays, teaching English writing is becoming more and more important, but there are many problems existing in English writing teaching in Chinese junior middle school. How to improve the quality of English writing teaching and students’writing ability has become a focus in our education. In this study, TBA was tentatively applied in writing teaching as a way to help to improve the English writing teaching and students ’writing ability.