With the advent of the Meiji period, tara as a conjunctive particle begins to be more often used than nara in some cases of the usages of subjunctive conditions in Kansai Japanese. Nara has two subjunctive usages: 1) usage following the statement of a fact or an actual condition and 2) usage following the statement of a supposed condition. In the Edo period, the transition from nara to tara takes place at first in the usage of 2), especially in the case of "supposition." In the succeeding Meiji period, nara is replaced by tara also in the both usages of 1) and 2) (in the cases of "assumption" and "introduction.") While the usage of 1) of tara instead of nara is generally seen in the case of "focusing," nara is likely to remain in use in the case of "precondition." These changes are observed in the conditional phrases following nouns as well as conjugated words. These temporal differences of the transition or replacement depending on the usages and their specific cases are considered to reflect the differences in the degree of representation of the speaker's judgment in each subjunctive expression. Moreover, it is concluded that the above changes result from the readjustment and analyzation characteristic of Kansai Japanese.