Taking MODIS，ETM and ASTER data obtained from the lower valley of the Tarim River in the period of 2000～2006 as the information source，the authors studied NDVI spatial and temporal variation regularity after water conveyance of the Kardayi section in the lower valley of the Tarim River from different time and space resolution angles. On such a basis，a NDVI prediction model of MODIS，ETM AND ASTER data obtained from different distances from the river and different periods was established. According to NDVI values predicted by the model，pixel dichotomy was used to perform inversion of vegetation coverage，whose precision was then verified with the investigation data obtained in the same year. It is shown that the average precision reached 82.88% or even higher. These achievements provide valuable reference data for the monitoring and prediction of the vegetation restoration in the lower valley of the Tarim River.