This invention presents the development method of a dynamic cycling mannequin for the use of wind tunnel testings. Compared to normal human testers, the mannequin has a great advantage in measurement repeatability, which is critical for equipment and garment development. The articulated mannequin consists of the inner skeleton and the outer shell. The outer shell of the mannequin is fabricated using additive manufacturing method accurately reflects the geometry of a professional cyclist.The joints of the skeleton in the upper body can be adjusted and fixed to represent different postures. The knee and hip joints of the mannequin are freely articulated, and can achieve passive pedalling motion. Compared to a conventional 3D printed rigid mannequin, the inclusion of the pedalling motion and posture adjustment capability greatly improves the quality and expandability of wind tunnel tests.