Abstract: In this paper, different planting densities of ratoon rice cv. "Neiyouhang 148" were tested. The results showed that the planting density of (1.4-1.6)×10⁴ clusters per 667 m² was optimum when "Neiyouhang 148" was cultivated as semilate and ratoon rice. The highest yield in the first season was obtained with the density of 1.4×10⁴ clusters per 667 m² while the highest yield in the ratoon season was obtained with the density of 1.6×10⁴ clusters per 667 m². The highest yield in these two seasons was obtained with the density of 1.6×10⁴ clusters per 667 m².