Abstract: The impact factor evaluates the journal by using the ratio between citations and the paper capacity. The writer suggests making the journal impact factor in detail and making comprehensive use of the journal impact factor and citations to evaluate the influence of the cited journal. This index is named the profound impact factor. The more impact factors and times the journal is cited, the more influence the journal has. In the paper, "Analytical Chemistry" "The Journal of Analytical Science" "Analytical Laboratory" "The Analytical and Experimental Journal" are used as examples to calculate the profound impact factor. In order to reduce the amount of calculation, we make a assumption that there are only five papers in each journal. We calculate profound impact factors of these four journals and analyze the result by counting impact factors of these five papers to the understand the influence of the cited journal in terms of the value of impact factors.

Key words: Journalevaluation