In order to explore the effects of different plant height,center of gravity height and basal stem traits on lodging resistance of rice,10 traits of 533 rice core germplasm under two cultivation modes including pot culture and field culture were analyzed with correlation and path analysis. The results showed that the first internode wall thickness and basal stem breakingresistant strength of the lowplant rice had synergy on the lodging index,indicating that improving lodging resistance of low-plant rice should focus on the first internode stem thickness and wall thickness. The lodging of high-plant rice is more affected by plant height and height of gravity center,indicating that improving lodging resistance of high-plant rice should concentrate in the second internode stem thickness. The improvement of lodging resistance of rice germplasm with different plant height can be achieved by enhancing the bending strength of rice basal stem. It will provide an important reference for improving lodging resistance of rice with different plant height.