This study was conducted to improve group production structure of green pepper in greenhouse. Plant was trained 45$^{circ}$ branching, erection after 45$^{circ}$ branching and erection. Light absorption index was calculated to investigate relation of light intensity and leaf area in different plant type according to plant height. Group production structure was analyzed with relative light intensity and dry weight of plant. In total growing seasons, group production structures were good in order of erect type after 45$^{circ}$ branching > erect type > 45$^{circ}$ branching type in view of light absorption, leaf and stem distribution. Plant height of erect type was taller than any other case, and average node length of 45$^{circ}$ branching type was shorter than any other case. But stem diameter, leaf area, fresh weight and dry weight of erect type after 45$^{circ}$ branching were superior to any other case. Yield is order of erect type after 45$^{circ}$ branching > 45$^{circ}$ branching type > erect type.