社会发展中道德代价的存在有其合理性的成份．在社会发展的进程中，物质的不断丰富常常是以付出和牺性道德为代价的。道德的代价与人类社会与利益发展需要的取舍是密切相关的，道德代价的合理性也是人类自身进行道德选择的合理性． The existence of moral cost in social development has its rationality. In the process of social development, the constant enrichment of material is often at the expense of moral sacrifices and sacrifices. The cost of morality is closely related to the choice of the needs of human society and the development of interests. The rationality of the moral cost is also the rationality of the moral choice of mankind itself.