Abstract: As the inheritance and development of the traditional moral trial,network moral trial faces a significant ethical dilemma.Reasonably,it should promote the ethical education of the actors by stimulating the positive sense of shame;however,in many cases,it leads to the ethical exclusion of actors because of the negative sense of shame.As a typical form of moral evaluation,network moral trial can be examined from the perspective of a spectator in emotionalist ethics,from which it can be found that there are many difficulties in the ability of sympathy,imagination and factual judgment of network spectators.At the same time,its group characteristics further aggravate the potential risks.In order to realize the fair network moral trial,we need to absorb and draw lessons from the multiple meanings of "just spectator" to construct the possible ethical approach.

Key words: network moral trial, shame, spectator, fair, public opinion