Abstract: To address the ecological degradation caused by hydropower development in high-cold and high-altitude regions and establish a systematic ecological restoration technology system suitable for the region, this paper reviewed the current status and bottlenecks of ecological restoration technologies, analyzed the vulnerability characteristics of alpine ecosystems and their responses to hydropower disturbances, and highlighted core issues such as soil erosion, ecosystem service degradation, and biodiversity loss.A pathway for constructing a systematic restoration technology system was proposed, including key technologies such as soil system reconstruction, vegetation community restoration, hydro-ecological regulation, and novel eco-material applications.Future research directions were outlined, emphasizing multi-scale ecological coupling mechanisms, adaptive restoration technologies, and intelligent monitoring platforms.