The utility model discloses a frozen cake fixing device, its characterized in that, including tray, at least one positioning column and at least one lock pin, the positioning column top end inserts the tray is located tray upper end face top, and the bottom of positioning column's bottom end is located tray lower end face bottom and is provided with the bolt hole on it, is provided with a lock pin in the bolt hole, after frozen cake completely frozen hardening, will lock pin insert the bolt hole in the bottom end of positioning column, make positioning column and tray closely fixed together, can effectively prevent frozen cake and move, shake in the transportation process, the frozen cake fixing device in the utility model is specially designed for frozen cake, can adapt to the freezing, transportation and distribution process of frozen cake, effectively fix frozen cake, prevent its displacement, deformation or damage, guarantee the quality of frozen cake.