The invention relates to a method of propagating and red pearl-scale dovetailed breeding Carassius aurutus, comprising the steps of (1) selecting parent fishes; (2) performing artificial propagation and artificial insemination; (3) performing artificial hatching; (4) cultivating in early stage; (5) performing primary optimization and late cultivation; (6) performing secondary optimization and late careful breeding. The individuals of red pearl-scale dovetailed breeding Carassius aurutus bred by the method have good strains, full flesh, bright color, symmetric and attractive body form, and significant breed features.