The present invention relates to a method for tracking, monitoring and evaluating ecological impacts of a channel project based on long-term time series satellite remote sensing data, belonging to the field of ecological environment protection. Created in view of limitations and deficiencies of existing monitoring and evaluation methods, the method includes: a process for long-term time series satellite remote sensing analysis of an ecological impact of a channel project, an analysis method for respectively evaluating erosion and deposition, shoreline and water area morphological changes at different research scales based on water body information extraction, and an analysis method for respectively tracking and monitoring engineering construction details, comparing engineering impact scope consistency and evaluating engineering implementation effects based on channel project identification.