Abstract: This paper reviews plant regeneration, genetic transformation and genetic improvement of carnation (Dianthus caryophyllus). Although there were few reports on plant regeneration from callus and somatic embryogenesis, organogenesis is still the principle method for plantlet regeneration of carnation. The genetic transformation systems were established by using Agrobaterium tumefaciens and microprojectile bombardment. The agrobaterium-mediated transformation is a stable and commonly used method for genetic improvement of the species. Great progress has been made in prolonging the vase life of carnation flowers of different cultivars. Some progress has also been made on modification of flower color, flower odor and plant form. Work on improving resistance to pests and diseases should be initiated in the future.