The technology of 3D printing has demonstrated its efficiency and convenience in various fields, becoming a hot spot of society. Because the technology of 3D printing has the feature of non-contact scanning, for those who are engaged in restoration of cultural relics, it is a new method that is worth introducing to protect high valued pottery and porcelain whose material are vulnerable during the process of replication and restoration. After briefly introducing the major process of pottery replication through 3D printing technology, further explore every step with details are explored, the advantages and disadvantages of different printing technologies are compared, including liquefaction printing and powder printing, and the choice of printing technology made in different demand is analyzed. Furthermore, this article also shows how to complete the entire replicate through staining the surface of the replicate and delicately handling the decoration on the surface after the 3D printing replicate is got. 3D printing technology can be applied to not only on replication of cultural relics, but also on restoration of heritages since it is nondestructive, efficient and precise when compared to traditional restoring methods.