Abstract: The uniqueness of information dissemination in blogsphere is characterized as publishing before correcting. There is an internal self-correction institution in the blogsphere which includes two aspects. The first one is realized by the interaction between bloggers, such as pointing out mistakes by blog readers, comparison and confrontation between of bloggers' opinions on the same topics and direct answers from the related people. The other is enforced by blog service providers that remove the dangerous posts in order to avoid being charged with judicatory responsibility.