Abstract: To the problem of low grad of ore, fine granularity and complex construction, low disposal effect of old jigger, low discharge rate of tailings of big grain of gangue, higher in gangue of grade of metal and oxidation sulfuration ore in Changpo Dressing Plant, old jigger has been exchanged, lifting was cancelled and concentrate establishment of slurry had been perfected.The effect is that cost is lower and the recovery ratio of tin is 3.07% more than old system, the recovery ratio of lead-Stadium is 4.84% more, and the recovery ratio of tin 6.12% more.