The present study examined the differential effects of immediate and delayed imitation on learning a rythmic task. Male students (n=18), ranged from 18 to 25 years old, were employed as subjects, who were randomly divided into two groups, i. e., Immediate Imitation Group (IIG) and Delayed Imitation Group (DIG). In learning the task, the subjects were required to tap a reaction measuring device with their dominant foot to a series of the tune of preappointed rhythmic stimulus. During the training periods, IIG was required to respond simultaneously to the stimulus, while DIG was required to do after hearing the stimulus. As the result, no significant difference (p <. 05) was detected between the two groups as for the training period and the effect maintenance period. Further analysis manifested that IIG could be divided into two subgroups relating to learning strategy. One is the group which tends to coincide with the hypothesis, and the other is the one where the subjects are assumed to do Symbolization in the sinilar way as delayed imitation even though they are under the condition of IIG.