The experiment was conducted to determine the optimum stocking density for Korean Native Chicken. The experiment was carried out with 810 Korean Native Chickens for 16weeks from April 22. 1987 to August 11. 1987. The chickens were housed in pens with varying stocking densities; T1(20 birds per 3.3$m^2$), T2(30 birds per 3.3$m^2$), T3(40 birds per 3.3$m^2$), T4(50 birds per 3.3$m^2$), T5(60 birds per 3.3$m^2$) and T6(70 birds per 3.3$m^2$). Each treatment contained three replicates. At the end of the trial, the average body weight of T1 was significantly heavier than that of T5 (P<0.05), but there were no statistical differences among the treatments in fed intake. The feed conversion of T3 was improved significantly in comparison with that of T5(P<0.05), and the viability of T1 showed a significantly difference with that of T5, T1 showed the highest production number, whereas T5 the lowest one.