Abstract: In response to the problems existing in the traditional English for chemistry teaching, a new mode is proposed merging task-based method with rain classroom. The characteristics of the integration of task orientation with rain classroom are analyzed and the teaching procedure, methods and effects in the course are described. Questionnaire survey and qualitative comparison are used to examine the effect of this teaching mode. The results show that the teaching mode can significantly improve the classroom atmosphere, teacher-student interaction and student participation; the integration of rain classroom can significantly improve the effect of task-based teaching; rain classroom can improve the daily teaching management to a certain extent; and the teaching mode can improve students' interest as well as academic performance.