Abstract: Based on the statistical data of Shandong Province from 2006 to 2019,the current situation of food security, agricultural mechanization and agricultural carbon emission in Shandong Province was analyzed. Then a simultaneous equation model was constructed and the least square method was used to test, so as to analyze the relationship between food security, agricultural mechanization and agricultural carbon emission. The results showed that improving agricultural mechanization and reducing carbon emission were conducive to improving food security, however, there was a positive correlation between the popularization and application of agricultural mechanization and agricultural carbon emission. The restriction of carbon emission would affect the promotion of agricultural mechanization and then affect grain yield. In order to achieve the balance between food security and the low-carbon economy, it was proposed to improve the rate of agricultural mechanization and grain output per unit area from the perspective of scientific and technological innovation and digital application.

Key words: food security, agricultural mechanization, agricultural carbon emission, Shandong Province