Abstract: According to the syngas with water and ash jammed problem occurred in the syngas scrbberthe two fuid model was applied to study the internal framework structure in the scruber of the GSP gasication deviceaffcted to the gas licuid twvo phase fuid mechancs. The numerical simulation resutis showed the ditrbuton law of the pressure drop gas content rate and fuid mechanicsparameters under he diferent perfomances The detailfow feld distribution was obtained. The stucyresults showed that the gas rising cylinder existed could cause serious entrainment and the bafle could play a certain role to release bubles punctured. n cver to veify the reliability of the numercal s imulation.a cold model experiment was conducted. T'he experiment resuts viselly showed the entrainment prc.ess caused y the gas rising cylinder and showed the infuences of the bafle to the buble fow.The experinent resuis were a quite sameto the simulato resitsan the numeiclsinulation verified had a guide role to the optimization of the scrubber design.