在外语学习中焦虑是影响学生学习效果的情感因素之一。焦虑的产生与人们所感受到的对其自我或自尊的威胁有关,本文着重探讨了情感因素—焦虑产生的原因及在外语学习中对学生的正负面的影响。提出了如何在教学中帮助学生克服焦虑情绪,发挥其正面的作用,提高外语教学的效果和学生的学习效率。 Anxiety in foreign language learning is one of the emotional factors that affect the learning effect of students. Anxiety is related to people’s threat to self or self-esteem. This article focuses on the emotional factors - the causes of anxiety and the positive and negative impact on students in foreign language learning. Put forward how to help students overcome anxiety in teaching, to play its positive role in improving the effectiveness of foreign language teaching and student learning efficiency.