As a form of collaborative learning, peer review has gained increasing popularity in writing instruction and been wildly adopted in EFL writing classrooms. Preparing students for peer review is an essential part of training. Since 1990s, there has been a number of studies conducted in the application of this technique. However, there is surprisingly little training in college on how to develop this essential skill or discussion of best practices to ensure that reviewers at all levels efficiently provide the most useful review. This paper presents some strategies of training students before, during and after peer review and aims to help students become effective peer reviewers.