Abstract: The aim is to provide a theory basis for the optimum row spacing allocation of major maize varieties in southeast Shanxi.‘Dafeng 30’was used as material in this study. Under the same density, the effects of different row spacing allocation on anthesis-silking interval (ASI), thousand grain weights, grain number per panicle, total panicle number and yield were analyzed. The results showed that the variation coefficient of yield, thousand grain weights, grain number per panicle and total panicle number were below 5% under different row spacing allocation, while the ASI was between 4.33%-12.50%. There were significant differences of ASI, grain number per panicle and yield among different treatments, but the differences of thousand grain weights and total panicle number were not significant. Multiple comparisons showed that ASI was the shortest, the grain number per panicle was more, and the yield was the highest under the 40 cm×80 cm row spacing. Therefore, when planting‘Dafeng 30’in southeast Shanxi, using 40 cm×80 cm row spacing could obtain the shortest ASI and higher yield.