Abstract: In order to study the optimum cultivation density of pod pepper, the effects of different cultivation densities on the growth and yield of pod pepper were studied by using Fujian Pepper King as the experimental material and setting 6 cultivation densities. The results showed that the cultivation density had no effect on the growth process of pod pepper, such as the early flowering season, the initial harvesting period and the final harvesting period. The cultivation density had a great influence on the botanical characteristics of pod pepper. With the increase of cultivation density, the plant height of pod pepper showed a trend of gradual increase, while the plant width and branching number showed a trend of gradual decrease. The cultivation density had an effect on the economic characters of pod pepper. With the increase of the cultivation density, the yield and fruit number per plant significantly decreased, and the average weight of single fruit showed a trend of gradual decrease. The yield of pod pepper showed a trend of gradual increase with the increase of cultivation density when the cultivation density was low and medium. When the cultivation density was 37 050 plant per hm², the yield of pod pepper reached the highest (1 236.7 kg per 667 m²). However, when the planting density was 47 640 plant per hm², the yield decreased significantly.