Selective acid Leach and beneficiation process was carried out to recover gallium from slag containing gallium.The experiment results of acid leaching tests showed that the leaching rate of Ga, A1 and K in the slag were above 83%,58% and 92% respectively, while the slag was leached with the liquid-solid ratio of 4:1,under that temperature of 80℃ for 2 hours.Results of selective concentration tests for gallium in solution showed that over 97% of gallium was precipitated, forming sediment containing a grade of over 4100g/t under the conditions that temperature was 80℃, leaching time length was 2 hours and pH was 2.4-2.6.On the other hand, with the same circumstances the precipitation rate orAl and K were respectively less than 20% and 1%, showing a different sedimentation behavior.