Abstract: In this Paper, the remote sensing image information in recent 30 years was extracted and interpreted for 4 main irrigated areas (the Hetao Irrigated Area, South Yellow River Irrigated Area, Dengkou Irrigated Area and Madihao Irrigated Area) along the Yellow River in Inner Mongolia, and the spatiotemporal evolution of their planting area and planting structure was analyzed based on the remote sensing means. The measured samples of the Hetao Irrigated Area in 7 years were used to verify the interpreted results, interpretation accuracy and the feasibility of the remote sensing means. The remote sensing interpretation showed that the total control area of the 4 irrigated areas was 17 845.55 km2 and 1.73% smaller than that of the official statistic result. The planting area and land use rate of the 4 irrigated areas were changed insignificantly and in a very low increase trend in recent 30 years. The planting structure of the 4 irrigated areas, however, was changed significantly and evolved from the singlewheat planting structure in the early years to the diversified planting structure of wheat, corn and sunflower afterwards in recent 30 years.