Anxiety is described by psychologists as a subjective feeling of tension, apprehension, nerveousness and worry associated with an arousal of the autonomic nervous system. Feeling anxiety is commonly expressed by us in our daily live, from workplace, classrom or even in our personal relationship. This study was carried out to explain foreign Language anxiety of EFL at eleventh grade of SMA Ma’arif NU O4 Kangkung, Kendal. Specifically, it sought to know how is students English learning anxiety also identify what factors that may contribute to anxiety in English learning environment based on the students perpectives.The method was used in this study was descriptive qualitative method. Twenty students were selected as the participants. The data were gathered through interview and classroom observations. The findings of this research showed that an EFL at the eleventh grade of SMA Ma’arif NU Kangkung, Kendal in the academic year 2017/2018 had feeling anxiety which has been manifested such as nervous, fidgeting, stuttering, sleeping, stammering, speaking too much and sweating when they study. Almost of them not interest with English lesson so they are lazy to learn and its impact they have limited vocabulary they also afraid to make mistake so they are not brave to speak up. While the factors that may contribute to anxiety, they are two factors such as internal and external factors. Internal factors from self-belief, lack preparation, linguistic aspect such as vocabulary, grammar and pronounciation. External factors can be from teacher, environment , speaking in front of class asked by teacher, incomprehensible input such as the way of teaching or learning, facility in classroom.