This is a complicated story. Since I involved the management of SCTNet, I have observed lots of phenomena of teachers¡¦cyber communities. It also extends my social-network, and getting acquainted with many teachers makes me to think about the meanings of teacher cyber community. The views of school-organisation, teachers¡¦ cultures, teacher professional development, educational technology and knowledge management from the literatures construct my comprehensions of teachers¡¦cyber community. But when blog arising, I try to understand: 1. How do teachers use blogs? 2. What do teachers write about in the blogs? And what¡¦s the connection between their daily lives and teaching works? 3. Rethinking how teachers¡¦ cyber community exercises and how it influences teachers. I chose one teachers¡¦blog site as my observation. Interviewing with the site manager Mr. Yu, his story represents the difficulty of advancing teachers¡¦cyber community. Secondly, I observed one of the site users, Ms. Ann, how she used the blog in a whole year. By way of interviewing, five main points were generalized from her teaching journal: blog as the source of teaching creation; the reflection of school routine activities; the assessment shadowed by the basic competence test; writing the student¡¦s anecdote and beginning to concern the life education; from the feedbacks of other internet friends, describing the interactions between Ms. Ann and her friends in order to represent the characteristics of online support group. Finally, according to Ms. Ann¡¦s story, I reflect my participating experiences of teachers¡¦cyber community and give the suggestions of the advancement of teachers¡¦cyber community in the future.