In practical training of teaching Japanese, it is needless to say that the feedback session is very important. However, the participants cannot share all analyses of teaching and advice with the conventional method. Besides, some shy trainees don't get the fulfillment and easily lose their motivations because they have difficulty in contributing to other trainee's feedback. To solve this problem, the author conducted the feedback session by using workshop style. The result shows that the workshop style feedback session is effective in keeping a friendly atmosphere, extending the network of study, and the occurrence of positive and active study.