As a research hotspot in the field of nano optics,metalens can be integrated with optical fiber bundles to fully reflect their light and thin characteristics.The combination of the two is conducive to propmotingthe miniaturization of imaging systems.In this paper,a novel of concentric ring structure metalens is designed using topology optimization method,and the integration of metalens and optical fiber image transmission bundle is accomplished using nano 3D printing technology.The diameter of the metalens is 30.47μm,and the numerical aperture(NA)is 0.8.Imaging experiments are carried out using a white LED light source and the results show that the metalens has good imaging performance.The miniaturized imaging system integrated with the metalens and fiber bundle proposed in this paper can be applied in various fields such as medical treatment,industry,and military applications.