At present, he is the deputy director of the Mathematics Professional Committee of Shimen Education Society, a member of Changde Mathematics Society and a member of Hunan Mathematics Professional Committee. Director of the Professional Committee of Psychological Education in Primary and Secondary Schools of Hunan Education Society and member of the Professional Committee of School Psychological Counseling of China Education Society. 1993 was rated as a senior middle school teacher, and in 2002 was rated as a special middle school teacher. 1995 was awarded the title of "provincial excellent teacher", and was the first academic leader of Shimen county in 2003. Now he is the vice president of Shimen No.2 Middle School.

Li Changchun served as a high school math teacher, with rigorous scholarship, standardized teaching and remarkable achievements. He once served as a member of the teaching and research group of the county mathematics center to guide the mathematics review of the county college entrance examination. He used to be one of the teachers of the first Mathematical Olympiad Training Course in Changde City, and guided many people to win the National Mathematical Olympiad Award. He used to be the host of Changde Mathematics Teaching and Research Group and a member of Hunan Vocational Education Group, and undertook many research projects. The research topic of "Practice and Thinking of Teaching by Law" won the third prize of the first scientific research achievement in Hunan Province, and the research of "Three-level Progressive Skills Teaching Mode in Vocational High School" won the second prize of the third scientific research achievement in Hunan Province.

The topic "Practice and Research of Student-oriented Mental Health Education" has become a sub-topic of the Tenth Five-Year Plan. Published and exchanged more than 30 educational and teaching papers.