The purpose of this study is to investigate and analyze the effect of English learners" writing anxiety on their writing performance. In order to accomplish this purpose, the following research question was examined in particular: Was there a correlation between writing apprehension, negative perception, fear of evaluation, and avoidance, on overall writing performance? To answer this, question 42 pieces of writing collected from 14 students were evaluated by the above four criteria of anxiety. Also, a writing apprehension survey was administered to those 14 English learners who performed English writings. The analysis of the survey indicated that there was a correlation between writing anxiety and students" writing performance. That might mean that teachers should try to provide less evaluated, comfortable, non-defensive atmosphere for English learners. Based on these results, this study attempted to provide implications for the effective English writing instructions in the classroom.