CH double-pulsed planar laser induced fluorescence (PLIF) measurements have been developed to investigate the dynamics of the flame elements in turbulent premixed flames. The time-resolved measurements of flame fronts were conducted in relatively high Reynolds number turbulent premixed flames stabilized in a swirl combustor. By selecting appropriate time interval of successive CH PLIF, movement of the flame front was captured clearly. In addition, by applying cross-correlation method for successive CH images obtained with minute time interval, displacement speed of the local flame element was measured.