Professor Fei is mainly engaged in research in the civil and commercial law, intellectual property, and Marxist theory. She has presided over more than 30 projects at provincial and ministerial level projects, Dalian projects and other commissioned projects; published more than 100 research papers in domestic and foreign journals; the research report, "Research on Legal Issues in the Development of Industrial Technology Innovation Alliance" won the "Top 10 Outstanding Achievement Awards in Liaoning Province".

The research carried out has the cross-disciplinary characteristics, and it is welcome to have the same academic journals such as law, Marxist theory, public management and so on.