Farmers in Shouguang City and Qingzhou City in Shandong province generally leave four main branches when pruning and leaving branches for sweet peppers. Recently, when the reporter interviewed Mengjiazhuang, Baocheng Street, Changle County, Shandong Province, he discovered that many vegetable farmers also kept four main branches, which was the same management method. However, the reporter found that when local farmers planted sweet peppers, they planted 1,200-1,500 acres per mu, while those in Shouguang City and Qingzhou City had about 2,000 per mu. The difference in the density of sweet pepper colonization is large, and the number of main branches is the same, which intangibly reduces the yield. Because there are four main branches on each sweet pepper, and 2000 and 1200 acres of land, the yield is worse on these 800 trees. Therefore, if 1200 bell peppers are to catch up with or exceed 2,000 trees in production, they must leave 1-2 roots on the basis of the original four main branches, so as to ensure production. The sweet peppers are pruned to improve the ventilation and light conditions in the field, increase the photosynthetic efficiency, promote the robust growth of the main branch, enable the nutrient to concentrate the supply of the resulting shoots, facilitate the multi-junction peppers, and bind the big pepper to improve the commercial properties of the pepper fruits. At the same time, it is also to allow each pepper branch and each fruit to have a reasonable growth space, ensuring that the sweet pepper is of good quality and high yield. Especially for the color pepper, fruit shape and coloring are directly related to the price and the income, which is very important. Therefore, in the sweet pepper management, reasonable pruning and leaving branches are indispensable. Therefore, when pruning sweet peppers, we must first look at planting density, and we must not imbue the experience of others. The growth space of sweet pepper on the land per mu is certain, and the number of shoots suitable for growing is also certain. The practice of planting shows that the number of main branches of sweet pepper per mu is kept between 5000-7000. In other words, when the planting density is 2000 plants, it is appropriate to leave 3-4 main branches per plant; when planting 1200 plantings per acre, two strong branches are left on the basis of leaving 4 main branches per plant.