After the Great East Japan Earthquake, some Japanese news paper companies dispatch positively information via Twitter. In this study, it was analyzed how 4 Twitter-account in 3 Japanese news paper companies were used tweet from 11 March to 11 April. As a result of this analysis, it became clear that the types of tweet of each Twitter-accounts differ. The difference in a type was classified into a "one-way traffic type", "both directions type", "for the stricken areas", and "to except for the stricken area" from the contents of the twitter, form, and the existence of the link.
