Abstract:Some critical indexes including NaCl content，moisture content，water holding capacity，mass transfer coefficient and texture during the process of grass carp circulation were detected to evaluate the mass transfer dynamics in low temperature.The experimental results showed that using soused with circulant cold water was more effective to enhance curing speed than soused with static water.With the help of cycling flow，curing speed was faster and faster until the cycling flow reached to a certain extent.Critical flow was 1 100 mL/min，which could be used in industry as reference.In a word，cycle pickled in some physical indexes such as moisture content，the water holding capacity and texture was better than stable pickled，with medium speed（1 100 mL/min）and transfer coefficient 1.61×10-9m2/s was effective.