Using the incomplete diallel cross method, correlation analysis between yield and main agronomictraits, path analysis of main agronomic characters and yield per plant was analyzed from 25 combinations of 5 malesterile lines of sorghum and 5 male sterile restorer lines and assembly. The genotypic correlation analysis showedthat the yield was significantly positive correlated with length of ear stem（0.5609）, plant height（0.4923）, thousandgrain weight（0.4034）, and it was significantly positive correlated with yield per plant（0.3846）, panicle weight（0.4389）. The results of path analysis of main agronomic characters and yield per plant showed that traits influencedthe yield direct in such sequence: panicle weight ＞ length of ear stem ＞ growth stage ＞ stem ＞ 1000 grain weight ＞spike length ＞ plant height.