With Andamu River of suburban Beijing City as the research object

representative indices inclu-ding river ecological features

hydrological characteristics

morphological features and landscape entertain-ment functions were selected in this study. Based on the comprehensive index analysis method with incorpo-ration of certainty and uncertainty of pair analysis

the ecological environment of the river was evaluated and classified into four categories： same

partially different

largely different and totally different. At the same time

the evaluation results were analyzed by adopting spatiotemporal analysis. The results show that the lo-cal ecological environment of the Andamu River was almost completely destructed in recent years. Urgent measures such as strengthening river management

treating rural wastes reasonably and effectively

reducing unnecessary human activities and balancing tourism development and ecological management should be em-ployed the key contents of river ecological regulation in the next step.