Abstract：In the course of running after suyplus labor time workers create free time which will lead to the sintegration of capitalism and prepare for the transition to future sociaty , this goes against the purpose of capital but is decided by the direct aim of capital .Free time is the key factor of realm of necessity to Freedom .Marx' s theory of free time provide us with an important visual angle to find out the motive power of pushing forward the sociaty development.
2003, Vol. 0 
