This review strives to illuminate the related studies on the effect of English as a Foreign Language teachers’ positive and negative emotions on their work engagement. The negative correlations among teachers’ boredom, apprehension, shame, frustration, and work engagement have been confirmed in the review of the literature. Furthermore, few studies have validated the effect of teachers’ positive emotions, such as enjoyment and pride, on their work engagement in educational contexts. The studies showed that some factors, such as teacher self-efficacy, teacher (...) self-sufficiency, increased academic challenges, and ambiguity in educational contexts, can mediate the relationship between teachers’ negative emotions and work engagement. The review of literature has emphasized the mediating role of growth mindset in the relationship between teachers’ positive emotions and work engagement. To improve the language teaching quality, the pedagogical implications are explained in the end. Some suggestions for further research are provided to expand the literature about teachers’ emotional variables. (shrink)