The influence of TGase and additives on gel hardness, cohesiveness and springiness of mussel surimi after picking pearls was studied. The results showed that the optimal TGase amount was 2%, pH was 7, at 45 ℃ for 1.0 h. The TGase can significantly enhance the texture properties of mussel surimi. The gel Hardness could reach 5 910.647 g, cohesiveness was 0.820 and springiness was 0.914. Additive agents could enhance gel properties as well, the optimal amount of potato starch, egg white and gluten were 6%, 6% and 9% respectively. It provides a theoretical foundation for the optimization of texture properties of mussel surimi.