Abstract: Based on the multilayer coupling network theory and transmission dynamics theory, the paper establishes a single-layer platform information dissemination model (S-SCIR model) and a double-layer platform model (O-SCI₂R model) in accordance with the mechanism of information spreading in crowdfunding platform. The transmission of information under different network conditions in the public platform is modelled and simulated. The factors influencing the dissemination of information is explored by simulating the transmission of information in the online and offline networks, providing a new perspective and method for the research of this kind of problems. The results show that the information can be transmitted more quickly under the condition of double layer coupled network, stronger online and offline node correlation is more helpful to the spread of information, and the greater the information value has, the faster the transmission of information will be.