The utility model discloses a smoke desulfuration system, this system be including disappear white cigarette device, hypergravity desulphurization unit and water saving fixtures, water saving fixturesinclude spray cooling device and defroster, and the flue gas of emission gets into water saving fixtures through the laggard income hypergravity desulphurization unit of white cigarette device cooling that disappears behind the desulfuration purification in hypergravity desulphurization unit, through the spray cooling device cooling, purify the back through the defroster again and get into the white cigarette device heat transfer that disappears heaies up, at last through the smoke stack emission. The utility model discloses a smoke desulfuration system have that the desulfurization is efficient, equipment is few, take up an area of economize, the small investment, the problem of the white cigarette of chimney hangover has been avoided simultaneously to characteristics such as easy operation.