Abstract: In recent years, China's agricultural production scale has expanded continuously, increasing demands for grain combine harvesters' performance and operational efficiency．Domestic and international technological trends show that intelligentization and large-scale development has become key trends for grain harvesters．Modern grain combine harvesters, integrating advanced technologies like sensors, navigation, image processing, and operain control, represent vital agricultural machinery in China．They significantly improve grain harvesting efficiency and quality, holding substantial strategic value．Current status, development trends, key technologies, and limiting factors of intelligent control tech for grain harvesters both domestically and internationally in recent years were analyzed．Systematic recommendations for future development in China were proposed from national, industrial, and technological perspectives, to provide a reference for high-quality development of China's grain harvesting technologies and equipment．