The treatment technics of the new type of same flow oblique board sedimentation basin is introduced. At the same time, the removing conditions of SS in this new type of sedimentation basin are introduced, too, and a contrast between the new one and the traditional one is made. The experimental result shows that the new sedimentation basin can work well in separating sludge and water, and there has been no blocks that exist in the water collecting pipes of the traditional same flow oblique board sedimentation basin. On the other hand, the removing rate of SS can get to 98% when the surface loading is equal to 30 m3/(m2·h) in the new one. The sedimentation efficiency of the same flow sedimentation basin is higher than that of the reverse flow one. That is to say, the same flow oblique board sedimentation basin has a broad future.