The utility model discloses a two (2 the nitrobenzophenone), the preparation facilities of disulphide, including feed arrangement, reaction unit and solid -liquid separation equipment. Feed arrangement comprises adjacent nitro chlorobenzene elevated dosing vessel, curing aqueous solutions of sodium elevated dosing vessel, premixer and material -handling pump, reaction unit includes tubular reactor and firing equipment, solid -liquid separation equipment receives the jar by material -handling pump, pressure filter, filtrating and constitutes. The utility model discloses a material preblends the mode that combines together with tubular reactor, reach continuous production high -quality two (2 the nitrobenzophenone), the purpose of disulphide has solved that fragrant ammoniacal impurity ismany, the product quality is low, and high, the hard to manage and equipment capacity of waste water ammonia -nitrogen concentratio hangs down the scheduling problem.