Street-dance refers to an unstructured and highly improvisational dance style that has typically evolved outside formal settings. The performance often consists of more than two people. The present study analyzed the relationship between body movements of two dancers in street-dance, based on a circular statics method. Twenty-eight 30-s sessions were recorded in which two participants were instructed to dance to musical beat by using a Kinect sensor (Expert -Novice: 8 sessions, Novice-Novice: 28 sessions). The phase synchronization of waist movements in each pair was evaluated based on a phase locking value. Moreover, the degrees of mutual influence of the dancers’ movements were evaluated using a partial circular correlation coefficient controlling the effect of its own preceding movement. Results indicated that Novice-Expert pairs showed more highly coordinated movement. This may be partially due to the positive correlation between the movements of novice and the preceding expert’s movement.