本研究旨在调查新疆奎屯市一所初中学校的109名学生的数学自我效能感和学习兴趣，并分析它们对初中生数学成绩的影响效应。同时，研究还探究了学习兴趣在自我效能感对初中生数学成绩影响中的中介效应。旨在揭示影响初中生数学成绩的关键因素和影响机制，从而为提升初中生数学成绩提供实证依据。研究结果表明:1.初中生数学自我效能感水平较高。初中生在A、B和C分维度及数学自我效能感上，无论性别还是年级，均没有明显的区别(p>0.05)，初二学生的自我效能感平均分低于初一学生。2.初中生的数学学习兴趣偏高，在性别、年级上均没有明显差异(p>0.05)。在性别上，女生平均得分要略高于男生，在年级上均分相差甚小。3.在初中生中，数学的自我效能感、学习热情与其表现之间是紧密相联的。学习兴趣对数学自我效能感与数学成绩起部分中介作用。数学自我效能感，学习兴趣均能对初中生数学成绩起预测作用。在对数学成绩预测中，数学自我效能感的回归系数为0.977，学习兴趣的回归系数为1.850。

This study investigates the self-efficacy and interest in mathematics of 109 students in a junior high school in Kuitun City, Xinjiang, and analyzes their influence effects.Meanwhile, The mediating role of interest in the effect of self-efficacy on achievement was also explored. Aims to reveal key factors and thus provide an empirical basis for improving math performance. The results showed that:1. Middle school students had high levels of self-efficacy in mathematics. There was no difference (p>0.05) in the A, B and C and total dimensions, regardless of gender or grade level, and the mean scores of the second year were lower than those of the first year students.2.Middle school students' interest in learning math is high, with no difference in gender or grade level (p>0.05). Girls scored slightly higher than boys on average, with very little difference in grade level.3.There is a link between self-efficacy in math, enthusiasm for learning and its performance. Interest in learning plays a partial mediating role. Self-efficacy, and interest were both predictive of performance, with a regression coefficient of 0.977 for self-efficacy and 1.850 for interest.