Abstract: Students' interest in learning not only can improve their learning enthusiasm and initiative, but also can improve the quality of classroom teaching and cultivate students' innovative thinking. How to excite the students' interest in learning is the key to the successful teaching. On the basis of fully understanding the role of students' interest in class learning, the author holds that teachers should pay attention to students and cultivate good teacher-student relationship, and create a bridge for communication between teachers and students; teachers should use rich and colorful forms in the teaching; teachers should give students more positive energy incentives in daily, lead the students to a positive attitude; and teachers should connect the teaching content with the daily life closely, and learn to integrate study into life. Through the above thinking, it is in order to give full play the role of students' learning interest in practical teaching effect.