Abstract: In a multifunctional postcard structure and its manufacturing method, the structure comprises: a transparent board, being a rectangular flat board structure with four edges, and any three successive edges of the transparent board having a folding board; a first board, attached onto the same side of the folding boards, and a containing space being formed between the transparent board and the first board; a second board, attached onto the other side of the folding boards, and the folding boards being covered between the first board and the second board; and a content, placed in the containing space, and having a pattern area defined on a surface of the content and viewable through the transparent board directly. With the design capable of changing the content quickly, the viewing effect can be changed during use. In addition, the content comes with a bookmark design to improve the practicability of the postcard structure.