Many reports has been revealing that anxiety and negative emotion could appear and become an obstacle during language learners' language learning (e.g. Atay & Kurt, 2006; Cheng, 2001, 2004; Horwitz, 2001; Kurt & Atay, 2007; Leki, 1999). This qualitative study has been conducted to explore the anxiety the relevant reasons why university students in Taiwan feel anxious during their learning. Sixteen students in southern Taiwan had cooperated with the researcher to investigate their learning experience and major factors of anxiety in writing subject. The findings conceptualized from students' qualitative statements revealed five major issues that were directly regarded as significant reasons why university students in Taiwan might undergo the anxious period during their writing course at school.