The invention discloses a crystal fish slide and a preparation method thereof. Squid meat and fresh water fish surimi are used as raw materials, a proper amount of auxiliary material is added, and crystal fish slide products can be prepared through the process steps of mixing the fresh water fish surimi with squid surimi, pulping, adding the auxiliary material, stirring, pulping, adding ice, pulping, packaging and quick-freezing. The processes are simple, the operation is convenient, the crystal fish slide is convenient to eat, high practicability is achieved, the process and labors are simplified, and a direction for deep-processing fresh water fish surimi products is explored. The crystal fish slide prepared through the method provided by the invention is rich in nutrition, unique in flavor, crispy and tasty in mouthfeel, safe and healthy, and convenient to carry, and well received by consumers.