Abstract: The paper aims to achieve high quality and high yield of pigmented pepper. By adopting split test design and using the cultivar‘0409’as the test material, we studied the interacting effect of density [82500 plants/hm2(A1), 67500 plants/hm2 (A2), 52500 plants/hm2(A3)] and row spacing (70 cm+50 cm, 60 cm+ 60 cm, 80 cm+40 cm) on yield and related traits of pigmented pepper by multiple analysis. The results showed that the biomass yield and fruit yield of pigmented pepper increased with the increasing density (A1>A2>A3) under different density and the same row spacing treatment; the biological yield and fruit yield of row spacing 80 cm+40 cm was the highest under the same density and different row spacing treatment, followed by row spacing 70 cm+50 cm, and three row spacing configurations were significantly different under A1 high density. With density increase, all yield traits, including fruit length, fruit shoulder diameter, single fruit weight, fruit weight per plant and the number of commercial fruit, were gradually decreasing, but the difference among the traits was not significant except the fruit weight per plant. The correlation coefficient was relatively large between the number of commercial fruit (0.8357*), single fruit weight (0.8196*), fruit shoulder diameter (0.7681) and fruit yield, while plant height (-0.8394*) was significantly and negatively correlated with fruit yield. Multivariate stepwise regression analysis showed that plant height, fruit shoulder diameter, single fruit weight and the number of commercial fruit were important indicators affecting the fruit yield, and the correlation coefficient was 0.9998. Principal component analysis of relevant indicators showed that the cumulative contribution rate of the first two principal components was 95.91%, which was basically consistent with the results of correlation analysis and path analysis of yield and related traits. In summary, the row spacing 80 cm+40 cm under the high-density 82500 plants/hm2 is the best cultivation pattern for pigmented peppers, and the potential of group production is the largest.