Abstract: @@ Beginning from January 2005, the Chinese Medical Journal will be published semimonthly. Since its establishment in 1887, this oldest medical periodical in China has been published monthly most of the time,and bimonthly, quarterly or even semiannually at times. To be published semimonthly is really the first time in the long centennial history of the journal. The shortening of the publication interval, in fact, reflects the surging accomplishments of medical sciences and technology in China in the past decades.