Abstract: Wetland is the main source of atmospheric methane. The increasing emission of atmospheric methane has brought great influence to the global climate change, and it has great significance to estimate wetlands methane emission accurately. Currently, the wetlands methane emission estimation models include mainly the experience model, the mechanism and process model and the remote sensing parameter model. The development process, application status, advantages and disadvantages of these three models were analyzed and summarized, and the uncertainty of these models were analyzed from the aspects of the wetlands methane emission, the monitoring process and the model estimation. The development trends of the wetlands methane emission estimation model were pointed out, and it was put forward that the remote sensing parameter model would be the development direction of wetlands methane emission estimation model.