Swedish and Japanese are known as languages that have quantity and both of them use duration as a primary acoustic cue for the long/short distinction. An identification task was conducted for Swedish learners of Japanese (SJ) and native Japanese speakers (NJ) with duration and pich accent as the variables. The results showed that SJ performed similarly to NJ with the variation of duration and pitch accent for long/short vowels, but not with pitch accent for long/short consonants. This suggested that the Swedes responded both to duration and pitch accent to identify the long/short vowels like the native speakers, but used only duration for consonants.