Abstract: In order to select the optimal row spacing and plant density and provide the technical basis for establishing the cultivation pattern of corn (Zea mays L.) super-high-yield, the effects of row spacing and plant density on panicle traits and yield were assessed in central Shanxi. The experimental design with the corn material of ‘Xieyu 3’ was a randomized block with nine treatments and three replications. The area of each plot was 18 m² (6 cm length × 3 cm width). Row spacing included 60:60, 50:50 and 60:40 cm that evaluated in plant density 60000, 67500 and 75000 plant/hm². Six lines were arranged for the treatments of 50:50 and 60:40 cm row spacing, and fives lines for that of 60:60 cm row spacing. The results showed that row spacing had significant effects on the yield of ‘XieYu 3’ at the 0.01 level. The ear weight, ear rows, ear coarse and ear grain weight were significantly affected by row spacing at 0.05 level. And the ear weight, ear rows, 100-kernel weight and ear grain weight were significantly affected by planting density at 0.05 level .The yield of ‘XieYu 3’ was mainly determined by the interaction among its panicle traits. Moreover, the highest yield of 16646.70 kg/hm² was obtained at a plant density of 75000 plant/hm² with a row spacing of 60:60 cm. Therefore, the compact-type corn of ‘Xieyu3’ is a good maize variety in the irrigated area in the center of Shanxi, and appropriately expanding plant spacing, narrowing the planting distance and increasing planting density could be a potential important way to increase the yield.