In recent years, virtual society has developed rapidly. It promoted the progress of human civilization. However, some problems came up at the same time, resulting in crises in virtual society governance. This paper analyzed the deep causes of crises in moral perspective: the fragmentation of technology development and morality shaping, the contradiction of diversified moral standards in virtual society and the loss of traditional social morality. Then, the author puts forward some solutions: establish the goal of moral value and build outer and inner mechanism of moral construction in virtual society.