Abstract: Rawls attempted to construct justice principles and then construct a just society with such principles. His two justice principles reflect the absoluteness of personal rights of freedom and his hope for the maximization of benefit of vulnerable groups. However, in Nozick’s eyes, Rawls’ two principles fall into a dilemma. On one hand, they are on the condition of individual freedom. On the other hand, the vulnerable groups’ interest is cared for on the excuse of social justice. And consequently, it is difficult to aquire individual freedom. Nozick thought the only way to get freedom is to stick to the three just principles allocation. The two masters have obvious divergence and they caused the long argument in academic circle.