This study explores the link between self-efficacy in English speaking and speaking proficiency among English majors at Modern College of Northwest University during their English Speaking class. By examining the beliefs students hold about their English-speaking abilities and how these beliefs relate to their speaking scores, the research seeks to determine the effects of various speaking tasks on students’ self-confidence in speaking. Data gathered from 155 participants using questionnaires and English-Speaking scores demonstrated a positive relationship between speaking self-efficacy and proficiency. The results emphasize the significance of boosting speaking self-efficacy in English Speaking classes and provide guidance for teaching methods that enhance students’ confidence and performance in speaking.