The local phase holdup in 130 L helicalflow airlift loop reactor was studied for the scaleup of residual slurry reactor. Different operation conditions, including superficial gas velocity, the bottom gap, solid loading, different types of draft tube, and ethanol addition were adopted to demonstrate their effects on phase holdup for airwater717 type anion exchange resin system. The results show that as the gas velocity and the amount of ethanol added increase, the local gas holdup in the riser increases. It decreases with the increasing of solid loading. As bottom gap increases, it increases first and then decreases. The optimal value of bottom gap is 60 mm. The gas holdup from big to small is as follows: the finned, the trumpetshaped, and the smoothed. When gas velocity is in range of 0.239~0.478 cm/s, the local solid holdup in the riser is much denser at the bottom. When gas velocity is in range of 0.597~0.836 cm/s, the axial profiles of solid volume fraction become uniform. With the bottom gap increasing, the local solid holdup decreases. And it shows little change at different ethanol concentrations.