Abstract: ： Based on the chlorophyll a concentration and synchronous Landsat 8 OLI data of Jingpo lake in September 2015, a combined band model of chlorophyll a concentration was established. According to the principle of goodness of fit and validation accuracy, the optimal inversion model was determined as（B₄+B₅）/B₃. The results showed that the spatial distribution of eutrophication in Jingpo lake is different by Carlson index method. Among them, most parts of the lake area belonged to the state of medium nutrition, the south part of the lake was in the state of poor nutrition, and the lake area near Jingbo township was in the state of eutrophication.

Key words: chlorophyll a concentration, remote inversion, satellite imagery, eutrophication, Jingpo lake