Abstract：We searched and analyzed the open access (OA) publishing situation of journals sponsored by China Association for Science and Technology (CAST) in 2009, such as the numbers of OA journals, the first-level online domain names, the distributions of journal’s discipline and class, the years from which archival content is freely available, the numbers of issues and articles freely available, and the timing of OA journals having a free online version. Compared with the analying results in 2007, we found that the numbers of OA journals increased from 140 to 206 in the last two years; 117 of these were the OA journals in 2007. The numbers of issues and articles freely available also had a large increment. The 5 year’s increasing rates of total citations, IFs and immediacy indexes for OA journals were higher than those of non-OA journals about 11.6, 5.6 and 2.1 percent, respectively. We conclude that the OA publishing model may be helpful in enhancing the journal’s visibility and accessibility, and thus increasing citations. The questionnaire survey showed that OA publishing model didn’t significantly affect the journal’s circulation income and the cost of management.