In order to investigate the effect of cryoprotectant on the freezing preservation of frozen tilapia surimi,goods cryoprotectant(sucrose/sorbitol) and trehalose were added in the tilapia surmi before being frozen.In this artice,the protein freezing denaturation of tilapia surimi during the freezing and frozen process was primary discussed by using gel strength,salt-solubility of myofibrillar protein and Ca2+-ATPase activity as parameters.The results showed that the additive of trehalose compared with goods cryprotectant more effective with preventing the protein freeze denaturation in tilapia surimi during the frozen storage and improve the quality of its products.

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