For downward cocurrent gas-liquid flow in a packed column, the flow and axial mixing character-istics of liquid phase were investigated. Based on experimental residence time distributions of liquid phase, parameters of mixing models were evaluated with three proposed mixing models : The axial dispersion model(ADM), the plug flow model with stagnant zone(PFM), and the axial dispersion model with stagnant zone(DSM). Accordingly, the applicability and parameters of each mixing model were analyzed for various opera-ting conditions. we found that the flow and mixing characteristics of liquid phase could be analyzed well by DSM, and also that the flow characteristics in the dynamic zone tended to access the plug flow at higher liquid Reynolds number(Re_L). Also, the fraction of stagnant zone estimated by the curve fitting method for the case of DSM was less than that of PFM. As liquid velocity increased, the fraction of the stagnant zone was decreased while the mass transfer coefficient vetween the dynamic and the stagnant zone was increased. In the dynamic zone, the calculated Peclet numbers in both ADM and DSM were increased with increasing the diameter of glass bead as a packing material and increasing liquid velocity at Re_L>40. In these conditions, correlations of these parameters were obtained for various operating conditions.