The mechanisms of reducing the turbulent frictional drag are discussed with regard to the bubble flow and the influence of bubble injection and turbulent shear stress on the wall. Research focusing on bubble deformation and effective viscosity has been actively conducted. In order to verify the influence of bubbles on the shear stress field, it is important to verify bubble deformation and effective viscosity in a simplified field such as a single bubble. Therefore, in this report, in order to carry out continuous verification of bubble deformation, an experimental apparatus capable of tracking and photographing bubbles was manufactured and basic data on bubble deformation in the turbulent boundary layer was acquired.