Based on the literature metrology, this paper compare and analyze the development process and characteristics of "over work" between China and Japan. The research differs between the two countries at least 15 years. Research teams and civil organizations in domestic is very few. Law and medicine foundation is weak. Results quality remains to be further improved. At the same time have got Japan's "over work" researching has been into the downturn. Lots of scholar do related research, some of them focus this field for long time.