This article through to the coal-burning boiler haze desulphurization method introduction, introduced emphatically in limestone aqueous method haze desulphurization principle, system and movement common breakdown, and the measure as well as in the production movement which to each kind of common breakdown reason, adopts the preventive measure has made the exhaustive elaboration.With instructs the movement personnel to adapt the work requirement as soon as possible, the guarantee desulphurization system security stable movement.