两大法系已经相继确立了第三人侵害债权制度,但是对于该制度的理论依据至今为止仍然没有取得一致的意见.为了第三人侵害债权制度的完善和发展,理论依据的研究具有重要意义。本文认为除了从艰深的民法理论中寻找其法理依据外,更应该从现金的债权的重要性、民法的社会本位主义理念的角度,运用利益衡量与价值判断的方法探讨第三人侵害债权的存在合理性。 However, there is still no consensus on the theoretical basis of the system so far.To study the theoretical basis of the third party infringement claims system is of great significance. In addition to looking for its legal basis from the arduous theory of civil law, this paper argues that we should use the method of interest measurement and value judgment to discuss the existence of the third party’s infringement of creditor’s rights from the perspective of the importance of cash claims and the concept of social individualism of civil law rationality.