The present study puts SFL-based genre approach under examination for its effectiveness in promoting EFL writers' genre awareness and writing competence in a 16-week semester in a state-run college in the east part of China. Three sets of data from pre- and post-test writings, interviews and questionnaires, are collected and analyzed with the help of the software SPSS and Range 32. The study indicates that the genre approach beats the traditional approach in sensitizing the writers' genre awareness, improving holistic writing quality and enhancing lexical density.