From June 65438 to July 0984, he taught in the Law School of Shandong University, and successively served as a teacher of economic law, economic contract law, creditor's rights law, contract law and property law. He edited more than 20 books and textbooks and published many papers. His research focuses on economic law, contract law and tort law. He is currently the vice president of Economic Law Branch of Shandong Law Society and an advisory member of Dongying Intermediate People's Court.