Abstract: As one of the main legume crops in Jiangsu province, adzuki bean is rich in protein and minerals, low in fat and it is one of the crops which can be used as food as well as medicine. But at present, there are some problems such as low yield, poor quality and mixed varieties in the production of adzuki bean, which seriously affect the planting benefit. It's important to develop high yield and quality adzuki bean variety. Tonghong 4 is a new adzuki bean variety, which was bred through hybridization by Jiangsu Yanjiang Instiute of Agricultural Sciences. It was commercially released in Jiangsu province in 2015. The breeding process, characteristics and cultivation techniques were summarized in order to provide reference for adzuki bean breeders and agricultural extension departments.

Key words: adzuki bean（Vigna angularis L.）, Tonghong 4, breeding, cultivation