Abstract: Standard, a topic of dispute of issue and doctrine, relates to the program, the guiding ideology and basic concepts of law, and also the liability mechanism, and it has great influence on legislation and justice.It seems relatively clear concerning what is the standard of civil or commercial law, but actually it is not uniform, and there is still room for study.Based on the standpoint of separation of civil and commercial code, the thesis abandons the polarization selection dilemma between personal and social standard, then suggests and demonstrates that civil law persists in personal standard while commercial law upholds enterprise one.Formation and regulation mechanism of civil and commercial liability are also studied comparatively in the paper.