A qualitative study was conducted to explore the use and effects of“Viewable for Last 3 days”of WeChat Moments，a coping approach to the negative use of social media.27 in-depth interviews were conducted to collect data.Three benefits of“Viewable for Last 3 days”of WeChat Moments were discussed，keeping from inappropriate prying eyes，gaining the initiative in personal image management and social interactions，and privatising the digital memory rather than sharing，which effectively eliminated the psychological and behavioral obstacles regarding the Moments use.The creative values and potential limitations of“Viewable for Last 3 days”were offered.