The purpose of this study is to investigate the influence of word frequency and word familiarity on meaning decision. This study aimed to explore, via meaning decision tasks, the influences of word frequency and word familiarity on the cognition of Japanese words of Taiwanese Japanese learners and which of the influences is stronger. The information about the speed and the accuracy will be collected in meaning decision tasks. As a result, it will be clarified whether word frequency and word familiarity affect linking the meaning of Japanese.