The invention relates to a water body change automatic identification method based on a time sequence remote sensing image. The method comprises the following steps: firstly, extracting a vegetation abundance index based on vegetation index time sequence data; establishing brightness through tasseled cap transformation; green degree and humidity index time sequence data sets; meanwhile, using themean value and the standard deviation of forest region indexes in a research region; subjecting the three indexes of brightness, greenness and humidity a to standardized processing; and extracting aninterference index by combining the brightness, the green degree and the humidity index after standardized processing, further detecting whether the vegetation abundance, the interference index and the humidity index have obvious change trends or not, and finally establishing a water body change automatic identification method based on the time sequence remote sensing image according to the changetrends of the vegetation abundance, the interference index and the humidity index. The method has the advantages of being good in space-time continuity, high in robustness, suitable for large-range water body change automatic extraction and the like.