Activity of Ca2+-ATPase, TVB-N and jelly strength of Mugi cephalus were studied in refrigeration for providing theoretical basis for processing. The results showed that addition against freezing could efficiently control decreasing of activity of Ca2 -ATPase of Mugil cephalus in refrigeration, and increase jelly strength of surimi of it and control decreasing of it. Therefore application of addition against freezing was practicable and efficient in processing Mugil cephalus .