In short-track speed skating, the three-dimensional kinematics of the lower extremities during whole skating cycle has not been studied. Kinematic parameters of the lower extremities during skating are generally presented as a function of time such as joint angles versus time graphs. However, this conventional parameter-time graph is not enough to describe the relationship between multi-joint movement patterns. In this study, full body motion data of 15 professional male skaters were recorded during 5-laps of short-track speed skating. We investigated the three-dimensional kinematics of the lower extremities, and then established the hip-knee interjoint coordination for both legs during the whole skating cycle. The results demonstrate the relationship between multi-joint movements during different phases of skating. This study provides fundamentals of the movement mechanism of the lower extremities that can be integrated with physiotherapy to improve skating posture and prevent injuries from repetitive stress since physiological characteristics play an important role in skating performance.