Abstract:Lodging was a more important limiting factor of sweet sorghum production and extension. Lodging resistance of several sweat sorghum lines were evaluated using a scale of 1 to 10 according lodging coefficient. The results indicated that differences in lodging resistance-related traits were evident among the different lines. The maintenance lines Tx3047B, Tx3048B, mo-cai B, Zhang 02427B, aphis resistance 60B, MAMAMAMA, R111B/Sug moderate plant height, P236/R111-1, E35/tang/9047B, and the restoring lines Tian C-1-1 hybrid-1, HAT-1, 15069, Zhou huang ai/pin 02283 were lodging resistant lines. It was probably that the variety with larger diameters of internodes, larger stalk mechanical strength and better lodging resistance could be breed.