This paper is composed by four parts. The first attaches importance to the issue on the grounds laid by oneself for the justification of the moral responsibilities one shall bear and carry out. The second summarizes the three basic approaches to this issue in the past. The third analyzes the strongpoint and shortcomings of the three approaches respectively. Finally, it attempts to reflect and answer the issue put above by organically synthesizing the strongpoint and shortcomings of above three approaches, and gives the author’s own explanation.
