以OA形式出版的期刊其品質如何、是否具有被引用優勢、各學科間是否有顯著差異等議題，向來為研究者與作者所好奇，也為評鑑者所質疑。本研究目的在探討不同學科領域中OA與非OA期刊於不同學科的影響力差異。利用書目計量分析方法，挑選JCR中七個SCIE與四個SSCI學科中，總計635種期刊為研究對象，分析2011年至2015年間期刊評鑑指標之表現。研究結果顯示，不同學科領域OA期刊的數量佔比差異極大，以 TROPICAL MEDICINE 學科的44.44%所佔比率最高，在SCIE領域中 PARASITOLOGY 學科的五年平均文章被引用次數9.02在OA出版模式上最具優勢，SSCI領域則是以 HEALTH POLICY & SERVICES 學科的5.42次具有優勢。IF分布差異方面，SCIE領域以 PHYSICS, PARTICLES & FIELDS 及 TROPICAL MEDICINE學科OA期刊的分布範圍較非OA期刊大，SSCI領域則是所有學科的OA期刊皆較非OA期刊分布數值相對較低也較集中。本研究建議未來大幅擴增所研究的學科領域與對象，希冀對OA期刊有更全面性的瞭解。
The quality of journals published under the model of Open Access (OA), whether they have citation advantages, or there are any significant differences between different fields, has not only interested researchers and authors but also raised doubts in the minds of the research evaluators. The aim of this study was to explore the influence of OA and non-OA journals in different disciplines. The bibliometric method was utilized in the study. A total of 635 journals with seven disciplines indexed in Science Citation Index Expanded (JCR-SCIE) and four disciplines in Social Sciences Citation Index (JCR-SSCI) were selected as the research objects to analyze the value of their evaluation indexes in various journals between 2011 and 2015. Results showed that there was a considerable difference in the numbers of OA journals in different disciplines, the TROPICAL MEDICINE discipline has highest proportion of 44.44%. In the field of SCIE, the five-year average article of the PARASITOLOGY discipline is 9.02, which has the most advantageous in the OA publishing model, and the SSCI field has advantages in the HEALTH POLICY & SERVICES discipline with 5.42. In the PHYSICS, PARTICLES & FIELDS and TROPICAL MEDICINE disciplines that the degree of dispersion of OA journals’ impact factors was more extensive than non-OA journals. And in the SSCI field, OA journals in all disciplines have lower IF values. This study suggests that further studies greatly expand the scope of research subjects to enhance the comprehensive understanding of OA journals.