CropWatch Bulletin, December 2025 (Volume 25, No.6) systematically assessed the dynamic changes of major cereal and oilseed crops in 89 countries worldwide from September to November 2025, summarized the global major and oilseed crop production, and food security status for the year 2025, and analyzed the impact of extreme weather events which significantly influence agricultural production. It also focused on fine-scale remote sensing monitoring and verification of crop area, yield, production and annual summarization in key countries, including Argentina, Brazil, China, India, Russia, the United States, and other major producing countries. Additionally, the report also provided forecasts for rice in equatorial regions and wheat in the Southern Hemisphere. The report aims to provide a comprehensive overview of the current state and evolving trends in global food production, offering a reference for related decision-making.