Interest is a strong motivation for a person to explore and study.The innovation ability of undergraduates is currently unsatisfactory because of their lack of interest.Only by arousing their interests can we improve students' innovative ability.The cultivation of learning interest should involve three aspects:university,teachers and undergraduates.The"soft power"should be paid more attention to by a university,the teaching and studying attitude should be strengthened,and a good learning environment should be created.A teacher should improve his teaching ability and methods,care about emotional communication with undergraduates,and adopt diverse evaluation methods.Undergraduates should increase their own comprehensive abilities,set up goals and directions for future.