Chili（Capsicum annuum L.）crops have high economic value and extensive planting， and most of the chili cultivars in China have high plant type， many branches， easy lodging， not conducive to mechanized production， and the cost of artificial production is rising. With the improvement of agricultural production technology and the increasing shortage of labor， the transformation of traditional agriculture to modern mechanized agriculture is imminent. The proposal of ideal plant type makes plant type regulation a hot spot in genetic breeding， which can provide reference for the analysis of the regulation mechanism of chili plant type. This paper reviews the research results of recent domestic and foreign scholars on the genetic factors and molecular mechanisms of plant type regulation， the biological relationship between plant hormones and plant type， and the influence of the environment on plant type， and puts forward the idea of ideal plant type of chili. Good chili plant type can improve plant production capacity， facilitate management， alleviate labor shortage， and accelerate the process of mechanized production. At present， there are few research reports on the regulation mechanism of chili plant type， so exploring the breeding mechanism and genetic basis of plant type regulation is conducive to providing theoretical support for the creation of good plant type germplasm resources and accelerating the selection and breeding of new varieties， and laying the foundation for the genetic breeding .