Abstract: In order to examine the responses of quality-related traits including commodity quality, edibility quality and nutrition quality to planting density in fresh corn, we selected 3 fresh corn varieties -520, Cuiwang(CW) and Huangbaili(HB), to conduct a field experiment in black soil region of central Jilin Province.The results showed that the residue ratio(RR), fresh ear weight(FEW) and seed feeding rate(SFR) were significantly influenced by varieties(V), planting density(D), and their interactions; while sucrose content, maltose content and total soluble sugar(TSS) were significantly affected by V and D.All three varieties with planting densities of 55 000 plants·hm^-2 obtained the highest fresh grain yield, and the yield was in an order of 13 556 kg·hm^-2(CW), 13 416 kg·hm^-2(520) and 12 484 kg·hm^-2(HB).Pericarp thickness(PT) was mainly influenced by V while little affected by D, with the lowest PT in CW(76.2 μm) and the highest PT in HB(87.0 μm).RR was mainly affected by V and then by D, with the lowest rate of RR in CW(8.03%) and the best taste.With increasing D, FEW and TSS showed a decreasing trend, while SFR showed an increasing trend.Therefore, a reasonable planting density would be an essential practice to balance the yield and quality of fresh corns, and the recommended planting densities for CW, and 520 and HB in black soil region of central Jilin Province are 45-55 thousands plants·hm^-2 and 55-60 thousands plants·hm^-2 respectively.