Objective To explore the characteristics of students' social anxiety conditions change through the follow-up study, and to provide the basis data for students' mental health intervention. Methods A total of 694 students and their parents were conducted for four years.Students completed the general condition chart and Social Anxiety Scale for Children (SASC);Parents completed the general condition chart, Center for Epidemiologic Studies Depression Inventory, Self-Rating Anxiety Scale. Results 1) The detection rates of 2009, 2011, 2013 of the students' social anxiety were 23.5%, 22.5% and 28.1%, respectively.There were significant differences among them (P<0.05).The social anxiety detection rates had significant differences in 2011 and 2013 (P=0.016).2) In 2011, there were 40.49% students who still had social anxiety in these that had social anxiety in 2009; In 2013, there were 22.70%.There were 49.36% students who had social anxiety in 2011 still investigating social anxiety in 2013.3) The social anxiety detection rates of grade 3 and grade 5 was different (P<0.05) in 2009;In 2011, the detection rates of social anxiety of grade 5 and 6 students was different (P<0.05).4) Pupils' detection rate of social anxiety was affected by only-child and parents quarrel; Junior high school students' detection rate of social anxiety was affected by gender.5) Parents depression had an influence on the students' detection rates of social anxiety in 2011.Parents' anxiety only affected girls' detection rates of social anxiety in 2011 and 2013. Conclusion The social anxiety detection rate of the higher grade students of the junior high school is higher than before;And parental anxiety or depression has a certain influence on students' social anxiety detection rate.