Abstract: The mechanization technology of Heilongjiang rice seedling greenhouse mainly includes intelligent seedling bed leveling mechanization technology, seedling swinging and soil covering mechanization technology, tray lifting mechanization technology, soft tray seedling tray separation mechanization technology, and rice rail transportation mechanization technology. This article mainly elaborates on the current application status, key technical points, and development prospects of mechanized technology for rice seedling cultivation in cold regions in China, providing a strong reference for improving the level of mechanized rice production throughout the entire process.