Laser cladding is a new type of technology to prepare nanostructured coatings. The present situation of domestic and foreign researches of laser cladding nanostructured coatings is reviewed, and the works of our group are also introduced. The main technologies to fabricate nanostructured coatings are introduced according to the different cladding samples, which can be divided into nano-particles and prefabricated nanostructured coatings. In terms of nano-particles, there are pure nano-particles, nanometer and micrometer composite particles, and reconstructed nano-particles etc. In terms of prefabricated nanostructured coatings, there are thermal-sprayed nanostructured coatings, nano-composite plating coatings, and sol-gel nanostructured coatings etc. The existent problems of the nanosturctured coatings prepared by laser cladding are presented. The development prospects of this preparation technology, such as in-situ synthesis of nanostructured coatings, laser cladding nanometer and micrometer composite particles, and numerical simulation of the laser cladding process are also discussed.