Abstract: Objective To investigate the relationships between children admission anxiety and mother's personality traits and anxiety level. Methods Using “kindergarten” and “the first time” as the keywords, about 900 000 messages from Sina Weibo were searched. A tolal of 768 Weibo messages posted by mothers were selected through manual screening. Textmind According to DSM-5,children's Admission anxietywas evaluated. The mother's anxiety level before and after children entered the kindergarten and personality traits was analyzed using. Results Children admission anxiety was positively correlated with mother's anxiety at 1 month before, 1 month and 3 months after children entered the kindergarten, was negatively correlated with mother's extraversion and openness, and was not significantly correlated with mother's neuroticism. Conclusion Mother's extraversion openness,and anxiety level before children entered the kindergarten may be predict the severity of children's admission anxiety. Future studies need to investigate how to conduct the intervention to mothers before their children enter kindergarten.