This paper describes an experimental study on mutual turbulent interactions across air-water interface in wind-induced water waves by using two sets of synchronous laser Doppler anemometers (SLDA) in air-water layers simultaneously. The purpose of this study is to clarify turbulent structures in a wind-driven shear layer of each phase (air and water), and to evaluate the turbulent momentum transport phenomena across the air-water interface, and also the transport from air-water interface to the water inertial flow.