The invention provides a clean steam system applied to Antarctic krill ships. The clean steam system applied to the Antarctic krill ships comprises a fresh water conveyor pump, a water supply preheater, a clean steam generator, an automatic sewerage system and a control system; the fresh water conveyor pump is used for conveying fresh water in an external fresh water tank to the water supply preheater; the water supply preheater is used for preheating the fresh water and conveying the preheated fresh water to the clean steam generator; the clean steam generator is used for providing high-temperature condensate water for the water supply preheater and heating the fresh water entering the clean steam generator; the automatic sewerage system comprises an external connection pipeline, a TDS detector arranged on the external connection pipeline, a discharge remote control valve and a sampler cooler; and the control system is used for controlling the open of a water supply remote control valve, a steam supply remote control valve and the discharge remote control valve and the start-up, stop and switch of the fresh water conveyor pump. The clean steam system applied to the Antarctic krillships effectively solves the steam supply problem of the shrimp powder processing production line on the krill ships, effectively guarantees the quality of finished shrimp powder, and eliminates therisk of chemical pollution in the water treatment.