The invention discloses a method for transmitting data in an opportunity network. The method comprises the following steps: adding a base station in the opportunity network to acquire, process and analyze data information, designing a source node recommendation strategy based on geographic positions, motion features and reputation values, dynamically regulating the quantity of resources shared by a data demand node sending a resource request through reputation feedback and updating node reputation values according to the document similarity, so that the decay rate of edge node reputation values is retarded on one hand, and higher matching requirements are provided for a community active node on the other hand. According to the method disclosed by the invention, the resource utilization rate and the transmission efficiency are effectively improved, and the transmission efficiency and the success rate are greatly improved on the premise of reducing the time delay and the resource consumption.