Abstract: Affected by human activities and global change, the ecological environment of coastal wetland in China has been seriously destroyed. Degradation zone of wetland is continuously extending unceasingly. Meanwhile, its ecological service function is declining and the situation is quite grim. Recently, domestic and foreign scholars have rendered countless researches and practical works to restore the degraded ecological environment of wetland, and accumulated noteworthy experiences and practical technologies. In this article, we take the Liaohe River Delta as an example to investigate the status and main causes of degradation, to introduce some technological thinkings for the ongoing restoration project, and to discuss the difficulties and problems to be solved. The future development trend of coastal wetland restoration is also prospected.