3D printing and post-processing integrated system and 3D printing flow production line

The invention discloses a 3D printing and post-processing integrated system and a 3D printing flow production line, and the integrated system comprises: a shell; a base; a printing unit; a post-processing unit; a powder supply unit; a printing platform unit, wherein t powder supply unit and the printing platform unit are jointly arranged on a same supporting base through respective lifting mechanisms so as to form a common unit; and conveying units, matched with one another, arranged below the supporting base and/or above the base, and used for conveying the common unit between the printing unit and the post-processing unit. On one hand, powder around a printed product is cleaned, and the surface of the printed product is clean and smooth. On the other hand, powder is injected into the powder supply unit, and the process requirement for next 3D printing of products is met. Compared with an existing printing product which needs to be fully cooled in a printing platform and then taken down to be processed, time