A steganographic method based on self-generated Visio network topology diagram comprises: (1) a preparation step; (2) a step of embedding secret information; and (3) a step of extracting the secret information. The invention drives the generation of the topology diagram of the Visio network through the secret information by utilizing the characteristics of multiple candidate primitives in each node in the process of generating a topology diagram of Visio network and regarding the generation rule of the topology diagram of Visio network based on the free tree as the base, thereby realizing theinformation hiding of high transparency. Compared with the existing method, since the original carrier is not needed, the invention avoids the possibility of contrast attack from the source, thereby greatly improving the security of the covert communication.