By using RNG k?ε turbulence model and Euler two-fluid multiphase model, simulation of countercurrent-crossflow gas?liquid imping scrubber was presented and the computed results were validated via experiments. The models’ reliability was confirmed by analyzing the parameters, including the velocities of the two phases, the turbulence intensity, the pressure drop and the local gas hold-up distribution. The flow field characteristics in foam area with diffierent nozzle structures and operating conditions were simulated. The results showed that the turbulence intensity in the foam area formed by collision of gas and liquid was quite high, the tangential and radial velocities of the two phases was high and the axial velocity was low. The foam area could be represented by the turbulence intensity. The volume fraction of the effective mass transfer area in the total flow field increased firstly and then decreased with the increasing of gas and liquid mass flow ratio, peaks around 0.0096. The effective mass transfer area firstly increased and then decreased with the increasing of the axial and tangential liquid mass flow ratio, and peaks around 0.66. When the diameter of the nozzle was 8 mm and tangential angle into the liquid was 60°, gas?liquid mass transfer reached the best.