Abstract: Abstract: It’s very important to study source indexes and influence in the academic journal evaluation and to continuously summarize their rules, howerer, the studies involving this area are quite rare. Adopting the medical journals in the institute of scientific and technical information of China, the relationship among ratio between grant-supported papers and total papers, average references per article, average number of authors, distribution of regions, citing half-life, and impact factor is analyzed based on the dot map, regression, and grouped statistics. The results show that the impact factor and source indexes have lower correlations, but their correlation level is different at the different data segment. The relationship among different journals’ source indexes and impact factor has its own characteristic; therefore source indexes should be given up while evaluating academic journal quality.

Key words: academic journal, source index, impact factor