Research on the duty convenience in criminal law Research on the governance function of criminal law Research on the legislative method of criminal law Research on age factor in criminal law Research on tatherrschaftslehre in Germany criminal law Research on the legal interest of economic criminal law 并列题名：Research on the legislative method of criminal law Research on the risks and control of preventive criminal law Research on the frontier issues of contemporary criminal law 并列题名：Research on tatherrschaftslehre in Germany criminal law