Abstract: The article uses the data of Chinese direct overseas investment on some other countries from 1993 to 2005,and constructs model by using the traditional C-D function, analyzing the relationship between the Chinese direct overseas investment and the total factor production.As a results,we can see that direct overseas investment has positive effects on our total factor production.Though the effect is modest,it is evident,in the long run,that our technology can be improved and our over-all strength can be raised through the direct investment into those countries who have advanced technology and larger research input.